1


Securities and Exchange Commission

Washington, D.C. 20549

Form 11-K
Annual Report

Pursuant to Section 15(d) of the 
Securities Exchange Act of 1934

For the fiscal year ended December 31, 1997

Commission File No. 1-10697

COMMERCIAL INTERTECH 401(k) PLAN 

COMMERCIAL INTERTECH CORP.
1775 Logan Avenue
Youngstown, Ohio 44505

   2





                                                AUDITED FINANCIAL STATEMENTS AND
                                                SCHEDULES



                                                COMMERCIAL INTERTECH 401(k) PLAN



                                                December 31, 1997 and 1996
   3




                         Report of Independent Auditors


Administrative Committee
Commercial Intertech 401(k) Plan


We have audited the accompanying statements of net assets available for plan
benefits of the Commercial Intertech 401(k) Plan (the "Plan") as of December 31,
1997 and 1996, and the related statement of changes in net assets available for
plan benefits for the year ended December 31, 1997. These financial statements
are the responsibility of the Plan's management. Our responsibility is to
express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the net assets available for plan benefits of the Plan at
December 31, 1997 and 1996, and the changes in its net assets available for plan
benefits for the year ended December 31, 1997 in conformity with generally
accepted accounting principles.

Our audits were made for the purpose of forming an opinion on the financial
statements taken as a whole. The accompanying supplemental Schedule of Assets
Held for Investment Purposes as of December 31, 1997, and Schedule of Reportable
Transactions for the year ended December 31, 1997, are presented for purposes of
complying with the Department of Labor's Rules and Regulations for Reporting and
Disclosure under the Employee Retirement Income Security Act of 1974, and are
not a required part of the financial statements. The supplemental schedules have
been subjected to the auditing procedures applied in our audit of the 1997
financial statements and, in our opinion, are fairly stated in all material
respects in relation to the 1997 financial statements taken as a whole.



                                                        /s/ Ernst & Young LLP


Cleveland, Ohio
June 24, 1998



                                       1

   4



                                                               Commercial Intertech 401(k) Plan

                                                     Statements of Net Assets Available for Plan Benefits

                                                                     DECEMBER 31, 1997                 
                                                    -------------------------------------------------- 
                                                        ALLOCATED       UNALLOCATED      TOTAL         
                                                    ---------------------------------------------------
                                                                                              
ASSETS
Cash and cash equivalents                                $    38,204                    $    38,204    
Interest receivable                                            4,904                          4,904    
Employer contributions receivable                                                                      
Employee contributions receivable                            282,288                        282,288    
                                                    ---------------------------------------------------
                                                             325,396                        325,396    
Investments:
   Interest in a registered investment company            19,415,490                     19,415,490    
   Investments in common/collective trusts                11,875,351                     11,875,351
   Unallocated insurance contracts                                                                     
   Commercial Intertech Corp. Series B
     Preferred Stock                                                                                   
   Commercial Intertech Corp. Common Stock                 5,504,788                      5,504,788    
   CUNO Incorporated Common Stock                                                                      
   Participant loans receivable                              858,604                        858,604    
                                                    ---------------------------------------------------
                                                          37,654,233                     37,654,233    
LIABILITIES
Notes payable                                                                                          
Other liabilities                                                                                      
                                                    ---------------------------------------------------
                                                                                                       
                                                    ---------------------------------------------------

NET ASSETS AVAILABLE FOR PLAN BENEFITS                   $37,979,629          $0        $37,979,629    
                                                    ===================================================




                                                               Commercial Intertech 401(k) Plan

                                                     Statements of Net Assets Available for Plan Benefits

                                                                      DECEMBER 31, 1996
                                                    -------------------------------------------------------
                                                         ALLOCATED       UNALLOCATED          TOTAL
                                                    -------------------------------------------------------
                                                                                            
ASSETS
Cash and cash equivalents                                 $ 4,806,533     $         669      $ 4,807,202
Interest receivable                                            90,907             2,328           93,235
Employer contributions receivable                             352,588                            352,588
Employee contributions receivable                             187,875                            187,875
                                                    -------------------------------------------------------
                                                            5,437,903             2,997        5,440,900
Investments:
   Interest in a registered investment company             12,083,261                         12,083,261
   Investments in common/collective trusts           
   Unallocated insurance contracts                         10,085,083                         10,085,083
   Commercial Intertech Corp. Series B
     Preferred Stock                                        8,102,658        16,511,115       24,613,773
   Commercial Intertech Corp. Common Stock                  8,150,870                          8,150,870
   CUNO Incorporated Common Stock                           1,642,988                          1,642,988
   Participant loans receivable                               563,803                            563,803
                                                    -------------------------------------------------------
                                                           40,628,663        16,511,115       57,139,778
LIABILITIES
Notes payable                                                                11,346,122       11,346,122
Other liabilities                                             154,075                            154,075
                                                    -------------------------------------------------------
                                                              154,075        11,346,122       11,500,197
                                                    -------------------------------------------------------

NET ASSETS AVAILABLE FOR PLAN BENEFITS                    $45,912,491     $   5,167,990      $51,080,481
                                                    =======================================================



See notes to financial statements.



                                       2

   5



                                                               Commercial Intertech 401(k) Plan

                                                              Statement of Changes in Net Assets
                                                                  Available for Plan Benefits

                                                             For the Year Ended December 31, 1997

                                                            Allocated          Unallocated            Total
                                                       -------------------------------------------------------------

                                                                                               
ADDITIONS
Employee contributions                                       $  3,136,397                            $  3,136,397
Interest income                                                   631,422         $     6,680             638,102
Dividend income                                                   432,526             396,147             828,673
Other income                                                       93,494                                  93,494
                                                       -------------------------------------------------------------
                                                                4,293,839             402,827           4,696,666
DEDUCTIONS
Interest expense                                                    7,056             401,653             408,709
Distributions                                                   7,436,127                               7,436,127
                                                       -------------------------------------------------------------
                                                                7,443,183             401,653           7,844,836
Net realized and unrealized appreciation in aggregate
   current value of investments                                 6,173,566                               6,173,566
Net transfers to (from) plan                                  (10,957,084)         (5,169,164)        (16,126,248)
                                                       -------------------------------------------------------------
Net deductions                                                 (7,932,862)         (5,167,990)        (13,100,852)
Net assets available for plan benefits at beginning
   of year                                                     45,912,491           5,167,990          51,080,481
                                                       -------------------------------------------------------------
NET ASSETS AVAILABLE FOR PLAN BENEFITS
   AT END OF YEAR                                            $ 37,979,629         $         0        $ 37,979,629
                                                       =============================================================



See notes to financial statements.



                                       3

   6


                        Commercial Intertech 401(k) Plan

                          Notes to Financial Statements

                          Year Ended December 31, 1997


A.     PLAN AMENDMENTS AND RESTATEMENT

The Commercial Intertech 401(k) Plan (the "Plan") constitutes an amendment and
restatement of the Commercial Intertech Retirement Stock Ownership and Savings
Plan and the merger of the Cylinder City Savings and Retirement Plan, both
effective September 1, 1997. Prior to the Plan merger, the Company matching
portion of the Plan was transferred, effective September 1, 1997, to the
Commercial Intertech Employee Stock Ownership Plan (the "ESOP").

The transfer of assets allocated to the accounts of participants included
approximately 143,824 shares of Convertible Series B Preferred Stock ("Preferred
Shares") with a value of $5,923,274, 207,707 common shares of Commercial
Intertech Corp. (the "Company") with a value of $3,621,891, and cash totaling
$3,086,270. The $12,631,435 transfer of allocated assets represented 27.5% and
24.7% of allocated and total net assets respectively available for benefits as
of December 31, 1996.

The transfer of unallocated assets and liabilities included 400,908 Preferred
Shares with a value of $16,511,115, cash totaling $146,287, and notes payable
with a value of $11,346,122. The $5,311,280 net transfer of unallocated assets
represented 102.8% and 10.4% of unallocated and total net assets respectively
available for benefits as of December 31, 1996.

The merger of the Cylinder City Savings and Retirement plan resulted in the
transfer of approximately $1,844,132 into the Plan. This amount is equal to 3.6%
of total net assets available for benefits as of December 31, 1996.

On June 16, 1997, the Plan was amended to allow participation by eligible
employees on and after the first day of the first month following the date the
employee completes the earlier of (1) six months and 500 hours of eligible
service or (2) one year of eligible service. This amendment was effective
January 1, 1997 and did not have a significant impact on the net assets
available for benefits.

On September 10, 1996 the Plan was amended to incorporate provisions relating to
the spin off of CUNO Incorporated, a wholly-owned subsidiary at that time.
Principally, all Company employees of CUNO Incorporated became fully vested in
their accrued benefits, and were terminated from the Company.



                                       4

   7


                        Commercial Intertech 401(k) Plan

                    Notes to Financial Statements--Continued


A.     PLAN AMENDMENTS AND RESTATEMENT--CONTINUED

As a result of the amendment, the Plan made distributions of $7,649,035 to CUNO
Incorporated employees in 1996, and $3,884,811 in 1997 ( for the 1996 Plan
year). Respectively, the amounts represent 15.0% and 7.6% of net assets
available for benefits at December 31, 1996.

The Plan was also amended on September 10, 1996 to allow participation by
non-highly compensated employees of the Component Engineering Division, as
defined by the Company. This amendment was effective July 1, 1996 and did not
have a significant impact on the net assets available for benefits.

B.     DESCRIPTION OF THE PLAN

The Plan consists of a pre-tax savings program, under which participants may
elect to contribute up to 18% of their compensation, on a tax-deferred basis,
into the Plan. Prior to September 1, 1997, the Plan consisted of a pre-tax
savings program allowing contributions up to 15% of a participant's
compensation, a post-tax program under which participants could contribute up to
an additional 10% of their compensation, and a leveraged matching employee stock
ownership plan. Participant contributions are subject to IRS limitations.

Employee contributions are accrued as income by the Plan on a monthly basis. The
Company contributes, into the ESOP, 50% (made in Preferred and Common shares as
needed) of the first 6% of eligible compensation that a participant contributes
into the Plan on a tax-deferred basis. Prior to September 1, 1997, Company
matching contributions were made directly into the leveraged matching portion of
the Plan. Post-tax contributions were made with after-tax dollars and did not
receive Company matching contributions.

All employees of the Company and its designated subsidiaries are eligible to
participate in the Plan upon reaching the earlier of (1) six months and 500
hours of eligible service or (2) one year of eligible service. The Plan is
subject to the applicable provisions of the Employee Retirement Income Security
Act of 1974, as amended ("ERISA"). The leveraged matching employee stock
ownership features of the Plan were designed to comply with Section 4975 (e) (7)
and the regulations thereunder of the Internal Revenue Code of 1986, as amended,
(the "Code").




                                       5

   8


                        Commercial Intertech 401(k) Plan

                    Notes to Financial Statements--Continued



B.     DESCRIPTION OF THE PLAN--CONTINUED

The Plan provides for separate investment options in one or more funds as
directed by the participants. Participants may change investment options at any
time. With the exception of the Commercial Intertech Common Stock Fund, all-new
investment options were offered effective September 1, 1997.

At December 31, 1997, 480 individuals participated in the Commercial Intertech
Common Stock fund, 630 individuals participated in the Benham Stable Asset Fund,
166 individuals participated in the Benham GNMA Fund, 117 individuals
participated in the American Century Strategic Allocation: Conservative Fund,
285 individuals participated in the American Century Strategic Allocation:
Moderate Fund, 278 individuals participated in the American Century Strategic
Allocation: Aggressive Fund, 451 individuals participated in the Barclays Equity
Index Fund, 350 individuals participated in the American Century Value Fund, 591
individuals participated in the American Century Equity Growth Fund, 755
individuals participated in the Twentieth Century Ultra Fund, 236 individuals
participated in the Twentieth Century Vista Fund, and 489 individuals
participated in the Twentieth Century International Growth Fund.

At December 31, 1996, 829 individuals participated in the CIGNA Guaranteed Long
Term Account, 691 individuals participated in the Commercial Intertech Common
Stock Account Fund, 291 individuals participated in the Fidelity Intermediate
Bond Fund, 450 individuals participated in the Fidelity Balanced Fund, 478
individuals participated in the Fidelity U.S. Equity Index Fund, and 741
individuals participated in the Fidelity Growth Company Fund.

All investment account dollars that result from employee contributions and
related investment results are immediately vested.

Company matching contributions and related investment results vest according to
the following schedule:



   Years of Vesting Service                   % Vested
- --------------------------------            --------------
                                             
Less than 1 year                                   0%
1 year                                            20
2 years                                           40
3 years                                           60
4 years                                           80
5 years                                          100




                                       6


   9


                        Commercial Intertech 401(k) Plan

                    Notes to Financial Statements--Continued



B.     DESCRIPTION OF THE PLAN--CONTINUED

Participants become fully vested in Company matching contributions upon
attainment of their normal retirement date, or upon their death or disability.
There were no non-vested assets in the Plan attributable to terminated employees
at December 31, 1997.

The Plan also provides for withdrawal in cases of financial hardship, upon
attainment of age 59-1/2, and of the post-tax savings program contributions.
Participating employees may borrow up to the lesser of 50% of their account
balance attributable to employee contributions or $50,000. The amount borrowed
is repaid to the participant's account via payroll deductions and carries an
interest charge at the market rate of interest at the date of the loan.

The Plan purchased the Preferred Shares, which are held in a trust established
under the Plan, in 1990 using the proceeds of a $14.3 million borrowing
guaranteed by the Company. In June 1993, the loan was refinanced through the
placement of 7.08% Senior Notes (the "Notes"), totaling $13,240,994, with two
insurance company lenders. In July 1996, the Notes, then totaling $11,869,497,
were purchased by the Company. Finally in September 1997 the Plan transferred
the Notes, then totaling $11,346,122, to the ESOP. The Notes were guaranteed by
the Company and were collateralized by the unallocated Preferred Shares. Each
year dividends on the Preferred Shares (allocated and unallocated) and Company
contributions to the Plan have been used to repay the Notes.

The financial statements of the Plan present separately the assets and
liabilities and changes therein pertaining to:

       a. The accounts of employees with vested rights in allocated stock 
          (Allocated) and

       b. Stock not yet allocated to employees (Unallocated).

The Plan is administered by the Administrative Committee (the "Committee")
appointed by the Company's Board of Directors. The trust department of UMB Bank,
an independent third-party bank, is the Plan's trustee. The Company has the sole
right to appoint the trustee, and to terminate the Plan, subject to the
provisions of ERISA. The Company pays all significant administrative expenses.



                                       7

   10

                        Commercial Intertech 401(k) Plan

                    Notes to Financial Statements--Continued


B.     DESCRIPTION OF THE PLAN--CONTINUED

Upon termination of the Plan, amounts credited to each participant's account
shall be 100% vested and nonforfeitable. Additionally, the interest of each
participant in the trust fund will be distributed to such participant or his or
her beneficiary at the time prescribed by the Plan terms and the Code.

The foregoing description of the Plan provides only general information.
Additional information about the Plan agreement, allocation of Preferred Shares,
forfeitures and distributions from the Plan may be obtained from the Committee.

C.     SIGNIFICANT ACCOUNTING POLICIES

BASIS OF ACCOUNTING

The accounting records of the Commercial Intertech 401(k) Plan are maintained on
the accrual basis.

VALUATION OF INVESTMENTS

Investments consisting of common shares of Commercial Intertech Corp. and common
shares of CUNO Incorporated (both in the Commercial Intertech Common Stock Fund)
are carried at the closing market price on the last business day of the Plan's
year. Investments consisting of Convertible Series B Preferred Stock were valued
by an independent appraiser using the greater of 3.0227 of the price of Company
common stock as of the last business day of the Plan's year or $23.25, the price
guaranteed to the Plan participants by the Company.

Investments in unallocated insurance contracts (CIGNA Guaranteed Long Term
Account) are valued at contract value as determined by Connecticut General Life
Insurance Company ("CIGNA"). Investments in registered investment company funds
(Fidelity Intermediate Bond, Balanced, U.S. Equity Index and Growth Company
Funds, Benham GNMA Fund, Twentieth Century Strategic Allocation: Conservative,
Moderate, and Aggressive Funds, American Century Value and Equity Growth Funds,
and Twentieth Century Ultra, Vista, and International Growth Funds), and in
common/collective trusts (Benham Stable Asset Fund, Barclays Equity Index Fund)
are carried at the value of their underlying assets as of the last business day
of the Plan's year as determined by their respective Investment Managers.
Participant loans receivable are valued at cost which approximates fair value.


                                       8

   11


                        Commercial Intertech 401(k) Plan

                    Notes to Financial Statements--Continued


C.     SIGNIFICANT ACCOUNTING POLICIES--CONTINUED

USE OF ESTIMATES

The preparation of financial statements in conformity with generally accepted
accounting principles requires the administrator to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.



                                       9

   12



                        Commercial Intertech 401(k) Plan

                    Notes to Financial Statements--Continued




D.   STATEMENTS OF CHANGES IN NET ASSETS OF PARTICIPANT DIRECTED FUNDS

     The amount of assets invested in each participant directed fund at the
beginning and end of the Plans' year and changes in assets in each fund during
the year were as follows:



                                                                                                                       
                                                                                                           Commercial  
                                                                                                            Intertech  
                                        CIGNA       Fidelity      Fidelity      Fidelity      Fidelity       Common    
                                     Guaranteed   Intermediate    Balanced     U.S. Equity   Growth Co.       Stock    
                                       Account      Bond Fund       Fund       Index Fund       Fund          Fund     
                                    ------------------------------------------------------------------------------------
                                                                                                  
Additions:
   Employee contributions             $   470,422    $   71,818    $  169,166    $  273,971    $  673,522    $  268,091
   Earnings from investments              382,521        41,351        44,722        40,245        20,139       252,605
                                    ------------------------------------------------------------------------------------
Total additions                           852,943       113,169       213,888       314,216       693,661       520,696

Deductions:
   Distributions                        1,005,983       149,310       243,113       180,091       530,618       296,461
   Administrative expenses                                                                                             
                                    ------------------------------------------------------------------------------------
Total deductions                        1,005,983       149,310       243,113       180,091       530,618       296,461

Net realized and unrealized
   appreciation (depreciation)           (134,150)       26,798       370,866       570,825     1,192,085     2,329,176
Transfers to (from) fund               (9,797,893)     (987,585)   (2,322,284)   (3,131,123)   (8,034,645)   (3,927,495)
                                    ------------------------------------------------------------------------------------
Net additions (deductions)            (10,085,083)     (996,928)   (1,980,643)   (2,426,173)   (6,679,517)   (1,374,084)

Net fund assets at beginning
   of year                             10,085,083       996,928     1,980,643     2,426,173     6,679,517     6,917,076
                                    ------------------------------------------------------------------------------------

NET FUND ASSETS AT END OF YEAR        $         0   $         0   $         0   $         0   $         0   $ 5,542,992
                                    ====================================================================================





                                                                          Twentieth   Twentieth   Twentieth
                                                                           Century     Century     Century     
                                                     Benham               Strategic   Strategic   Strategic    
                                    Participant      Stable    Benham    Allocation  Allocation   Allocation   
                                       Loans         Asset      GNMA     Conservative Moderate    Aggressive   
                                    Receivable       Fund       Fund        Fund        Fund         Fund      
                                    ---------------------------------------------------------------------------
                                                                                          
Additions:
   Employee contributions                         $  153,453  $   29,595    $ 26,948  $   69,055  $   57,708   
   Earnings from investments          $  56,191      286,106      41,920      28,010      75,692      63,195   
                                    ---------------------------------------------------------------------------
Total additions                          56,191      439,559      71,515      54,958     144,747     120,903   

Deductions:
   Distributions                          3,729      459,290       4,284       3,442         500       3,416   
   Administrative expenses                               701          17         106          27          64   
                                    ---------------------------------------------------------------------------
Total deductions                          3,729      459,991       4,301       3,548         527       3,480   

Net realized and unrealized
   appreciation (depreciation)                                    14,858     (11,325)    (23,447)    (38,473)  
Transfers to (from) fund                242,339    8,807,431   1,453,315     454,089   1,398,455   1,228,849   
                                    ---------------------------------------------------------------------------
Net additions (deductions)              294,801    8,786,999   1,535,387     494,174   1,519,228   1,307,799   

Net fund assets at beginning
   of year                              563,803
                                    ---------------------------------------------------------------------------

NET FUND ASSETS AT END OF YEAR        $ 858,604  $8,786,999   $1,535,387   $ 494,174 $1,519,228    $1,307,799  
                                    ===========================================================================






                                    
                                                               American                            Twentieth
                                      Barclays    American     Century     Twentieth   Twentieth    Century
                                       Equity      Century      Equity      Century     Century   International
                                        Index       Value       Growth       Ultra       Vista      Growth
                                        Fund        Fund         Fund        Fund        Fund        Fund
                                    ---------------------------------------------------------------------------
                                                                                        
Additions:
   Employee contributions              $  112,398   $  86,002   $  187,515  $  248,811 $   46,557    $  96,952
   Earnings from investments                2,104     334,053      530,488   1,105,064     50,331      241,417
                                    ---------------------------------------------------------------------------
Total additions                           114,502     420,055      718,003   1,353,875     96,888      338,369

Deductions:
   Distributions                            4,828       4,236        8,394       6,897        495        8,908
   Administrative expenses                    120         277          272         372         76          258
                                    ---------------------------------------------------------------------------
Total deductions                            4,948       4,513        8,666       7,269        571        9,166

Net realized and unrealized
   appreciation (depreciation)            141,220    (255,311)    (250,689) (1,173,109)  (165,545)    (214,361)
Transfers to (from) fund                2,837,578   1,946,444    4,153,496   5,187,064    835,164    1,598,744
                                    ---------------------------------------------------------------------------
Net additions (deductions)              3,088,352   2,106,675    4,612,144   5,360,561    765,936    1,713,586

Net fund assets at beginning
   of year                          
                                    ---------------------------------------------------------------------------

NET FUND ASSETS AT END OF YEAR         $3,088,352 $2,106,675   $4,612,144   $5,360,561  $ 765,936   $1,713,586
                                    ===========================================================================






   13



                        Commercial Intertech 401(k) Plan

                    Notes to Financial Statements--Continued




E.     INCOME TAX STATUS

The Internal Revenue Service has ruled that the Plan qualifies under Section
401(a) of the Internal Revenue Code and is, therefore, not subject to tax under
present income tax laws. The Plan is amended periodically to conform with
current income tax laws. The Committee is not aware of any action or event that
has occurred that might affect the Plan's qualified status.

F.     TRANSACTIONS WITH PARTIES-IN-INTEREST

The Plan purchased shares of common stock of the Company for $1,274,270 and sold
shares of common stock of the Company for $2,447,169 during the year ended
December 31, 1997. The Plan also sold shares of CUNO Incorporated, a former
wholly-owned subsidiary for $1,624,107.

The Plan received dividends on common stock of the Company of $290,410 and
dividends on Preferred Shares of the Company of $538,263 during the year ended
December 31, 1997.

At December 31, 1996, the Plan had a noncash contribution receivable from the
Company of 25,878 shares, of Company common stock with a market value of
$352,588. At December 31, 1997, the Plan had no Company contributions receivable
due to the transfer of the Company matching portion of the Plan to the ESOP.




                                       11

   14

                        Commercial Intertech 401(k) Plan

                    Notes to Financial Statements--Continued



G.     INVESTMENTS

As of December 31, 1997, the Plan's investments consist of common stock of the
Company, interests in common/collective trusts (Benham Stable Asset Fund,
Barclays Equity Index Fund), interests in a registered investment company
(American Century Investments), amounts in a temporary investment fund, and
loans to participants as follows:



       Identity of Issuer                   Description of                                 Current
        or Similar Party                      Investment                   Cost             Value
- ---------------------------------------------------------------------------------------------------------
                                                                                
 *Commercial Intertech Corp.       265,291 Common Shares,
                                      $1.00 Par Value                     $ 2,426,238  **   $ 5,504,788
 *American Century Investments     Benham Stable Assets Fund                8,786,999  **     8,786,999
 *American Century Investments     Benham GNMA Fund                         1,521,067         1,535,387
 *American Century Investments     Twentieth Century Strategic                
                                     Allocation: Conservative Fund            506,433           494,174
 *American Century Investments     Twentieth Century Strategic
                                   Allocation: Moderate Fund                1,542,454         1,519,228
 *American Century Investments     Twentieth Century Strategic
                                      Allocation: Aggressive Fund           1,346,196         1,307,799
  Barclays PLC Bank                Barclays Equity Index Fund               2,948,825  **     3,088,352
 *American Century Investments     American Century Value Fund              2,359,679  **     2,106,675
 *American Century Investments     American Century Equity                  
                                      Growth Fund                           4,863,398  **     4,612,144
 *American Century Investments     Twentieth Century Ultra Fund             6,523,964  **     5,360,561
 *American Century Investments     Twentieth Century Vista Fund               922,695           765,936
 *American Century Investments     Twentieth Century International
                                      Growth Fund                           1,921,493         1,713,586
 *UMB Bank                         Scout Prime 1 Mutual Fund                   38,204            38,204
  Participants                     Loans Receivable                           858,604           858,604
                                                                     ====================================
                                                                          $36,566,249       $37,692,437
                                                                     ====================================




                                       12

   15


                        Commercial Intertech 401(k) Plan

                    Notes to Financial Statements--Continued


G.     INVESTMENTS--CONTINUED

As of December 31, 1996, the Plan's investments consisted of common and
Preferred Shares of the Company, common shares of CUNO Incorporated, interests
in a registered investment company (Fidelity Management Trust Company),
unallocated insurance contracts (CIGNA Guaranteed Long Term Account), amounts in
a short-term investment fund, and loans to participants as follows:



       Identity of Issuer                   Description of                                 Current
        or Similar Party                      Investment                   Cost             Value
- ---------------------------------------------------------------------------------------------------------
                                                                                 
 *Commercial Intertech Corp.       598,229 Common Shares,
                                      $1.00 Par Value                     $ 4,207,538  **  $ 8,150,870
 *Commercial Intertech Corp.       196,741 Convertible Series B
                                      Preferred Shares-Allocated            4,574,238  **    8,102,658
 *Commercial Intertech Corp.       400,908 Convertible Series B
                                      Preferred Shares-Unallocated          9,321,111  **   16,511,115
  CUNO Incorporated                110,453 Common Shares,
                                     $.001 Par Value                          858,436        1,642,988
  Connecticut General Life         Guaranteed Long Term Account
    Insurance Company                (effective yield 5.65%)               10,085,083  **   10,085,083
  Fidelity Mgt. Trust Co.          Intermediate Bond Fund                   1,017,506          996,928
  Fidelity Mgt. Trust Co.          Balanced Fund                            1,818,112        1,980,643
  Fidelity Mgt. Trust Co.          U.S. Equity Index Fund                   1,780,731        2,426,173
  Fidelity Mgt. Trust Co.          Growth Company Fund                      5,322,628  **    6,679,517
 *LaSalle Nat'l Bank, N.A.         Short-Term Investment Fund               4,807,197  **    4,807,197
   Participants                    Loans Receivable                           563,803          563,803
                                                                     ------------------------------------
                                                                          $44,356,383      $61,946,975
                                                                     ====================================


*  Party-in-interest.

** Investment representing five percent or more of the Plan's net assets
   available for benefits.



                                       13

   16

                        Commercial Intertech 401(k) Plan

                    Notes to Financial Statements--Continued



G.     INVESTMENTS--CONTINUED

The net appreciation (depreciation) (including investments bought, sold and held
during the year) for each significant class of investment for the year ended
December 31, 1997 is as follows:



                                                                   
Fair value determined by closing market price:
   Commercial Intertech Corp. Common Stock:
     Participant-Directed Accounts                                        $2,308,870
     Company Matching Accounts                                               799,078
   CUNO Incorporated Common Stock:
     Participant-Directed Accounts                                            20,306
     Company Matching Accounts                                                36,284
  Fair value determined by other means (see Footnote C):
       Fidelity Intermediate Bond Fund                                        36,253
       Fidelity Balanced Fund                                                336,786
       Fidelity U.S. Equity Index Fund                                       665,248
       Fidelity Growth Company Fund                                        1,272,898
       Benham Stable Asset Fund                                              185,815
       Benham GNMA Fund                                                       48,544
       American Century Strategic Allocation:
         Conservative Fund                                                    17,437
         Moderate Fund                                                        47,313
         Aggressive Fund                                                      25,755
       Barclays Equity Index Fund                                            169,498
       American Century Value Fund                                            73,616
       American Century Equity Growth Fund                                   277,340
       Twentieth Century Ultra Fund                                          (62,070)
       Twentieth Century Vista Fund                                         (114,814)
       Twentieth Century International Growth Fund                            29,409
                                                                          ----------

                                                                          $6,173,566
                                                                          ==========


The Company's common stock is publicly traded on the New York Stock Exchange
(ending per share price at December 31, 1997 was $20.750). The Company's
Preferred Shares are not registered or publicly traded. Each Preferred Share was
convertible into 3.0227 shares of common stock at any time subject to
anti-dilution adjustments. Annual dividends on the Preferred Shares were
$1.97625 per share. The Preferred Shares are callable by the Company under
certain conditions specified in the Plan, at the following prices:



                                       14

   17


                        Commercial Intertech 401(k) Plan

                    Notes to Financial Statements--Continued



G.     INVESTMENTS--CONTINUED



             Call Date                             Call Price
- ----------------------------------------------------------------
                                                       
January 1, 1998                                         $23.63
January 1, 1999                                          23.44
January 1, 2000 and thereafter                           23.25


H.     RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500

The following is a reconciliation of net assets available for benefits per the
financial statements to the Form 5500:



                                                               DECEMBER 31
                                                          1997              1996
                                                      -------------------------------
                                                                            
Net assets available for benefits per the
   financial statements                               $37,979,629         $51,080,481
Amounts allocated to withdrawing
   participants                                          (777,668)         (6,136,752)
                                                      ==================================

NET ASSETS AVAILABLE FOR BENEFITS PER THE
   FORM 5500                                          $37,201,961         $44,943,729
                                                      ==================================


The following is a reconciliation of distributions paid to participants per the
financial statements to the Form 5500:



                                                                     YEAR ENDED
                                                                    DECEMBER 31,
                                                                        1997
                                                                    --------------
                                                                            
Distributions paid to participants per the financial
   statements                                                        $ 7,436,127
Add:  Amounts allocated to withdrawing participants at
   December 31, 1997                                                     777,668
Less:  Amounts allocated to withdrawing participants at
   December 31, 1996                                                  (6,136,752)
                                                                     -----------

BENEFITS PAID TO PARTICIPANTS PER THE FORM 5500                      $ 2,077,043
                                                                     ===========





                                       15

   18



                        Commercial Intertech 401(k) Plan

                    Notes to Financial Statements--Continued


I.     EMPLOYER CONTRIBUTIONS

Effective September 1, 1997, the Company is obligated to make matching
contributions in cash to the ESOP which, when aggregated with the ESOP's
dividends on Preferred Shares and interest earnings, equal the amount necessary
to enable the ESOP to make its regularly scheduled payments of principal and
interest due on its Notes. This contribution enables the ESOP to allocate an
appropriate number of Preferred Shares to participants (see Note B). Should the
value of Preferred Shares allocated be less than the required matching
contribution, the Company will make additional contributions to the ESOP in the
form of common stock or cash. Should the value of Preferred Shares allocated be
more than the required matching contributions, any excess value of Preferred
Shares released over the required amount will be allocated proportionately to
each participant's account in the ESOP based upon the ratio of the participant's
current Company matching contribution to the ESOP for the Plan year to the
aggregate Company matching contributions to the ESOP for all participants for
the Plan year. Prior to September 1, 1997, employer contributions were made to
the Plan on the same basis as described above.

J.     YEAR 2000 ISSUE (UNAUDITED)

The Plan Sponsor has developed a plan to modify its internal information
technology to be ready for the year 2000 and has begun converting critical data
processing systems. The project also includes determining whether third party
service providers have reasonable plans in place to become year 2000 compliant.
The Plan Sponsor currently expects the project to be substantially complete by
early 1999. The Plan Sponsor does not expect this project to have a significant
effect on the Plan's operations.




                                       16

   19




                                                                                                                                   1
                        Commercial Intertech 401(k) Plan

           Item 27(a)--Schedule of Assets Held for Investment Purposes

                                December 31, 1997


         Identity of Issue                          Description of                                                Current
          or Similar Party                            Investment                                Cost               Value
- -----------------------------------------------------------------------------------------------------------------------------
                                                                                                     
*  Commercial Intertech Corp.               265,291 Common Shares,
                                               $1.00 Par Value                              $ 2,426,238        $ 5,504,788
*  American Century Investments             Benham Stable Asset Fund                          8,786,999          8,786,999
*  American Century Investments             Benham GNMA Fund                                  1,521,067          1,535,387
*  American Century Investments             Twentieth Century Strategic
                                               Allocation:  Conservative Fund                   506,433            494,174
*  American Century Investments             Twentieth Century Strategic
                                               Allocation:  Moderate Fund                     1,542,454          1,519,228
*  American Century Investments             Twentieth Century Strategic
                                               Allocation:  Aggressive Fund                   1,346,196          1,307,799
   Barclays PLC Bank                        Barclays Equity Index Fund                        2,948,825          3,088,352
*  American Century Investments             American Century Value Fund                       2,359,679          2,106,675
*  American Century Investments             American Century Equity
                                               Growth Fund                                    4,863,398          4,612,144
*  American Century Investments             Twentieth Century Ultra Fund                      6,523,964          5,360,561
*  American Century Investments             Twentieth Century Vista Fund                        922,695            765,936
*  American Century Investments             Twentieth Century International
                                               Growth Fund                                    1,921,493          1,713,586
*  UMB Bank                                 Scout Prime 1 Mutual Fund                            38,204             38,204
   Participants                             Loans Receivable                                          0            858,604
                                                                                            ==============================
                                                                                            $35,707,645        $37,692,437
                                                                                            ==============================


*        Party-in-interest


                                       17

   20


                        Commercial Intertech 401(k) Plan

                 Item 27(d)--Schedule of Reportable Transactions

                          Year Ended December 31, 1997




                                                                                                     Current Value
                                                                                                      of Asset on       Net
         Identity of                      Description          Purchase       Sales       Cost of     Transaction      Gain
        Party Involved                     of Assets             Price        Price        Asset          Date        (Loss)
- ----------------------------------------------------------------------------------------------------------------------------------
                                                                                                 
SINGLE TRANSACTIONS + 5%

Fidelity Management Trust Co.    Fidelity U.S. Equity Index                 $ 3,804,919  $ 2,535,984   $ 3,804,919  $  1,268,935
                                    Fund

Fidelity Management Trust Co.    Fidelity Growth Company Fund                 8,129,727    5,538,448     8,129,727     2,591,279

American Century Investments     Benham Stable Asset Fund      $10,521,551                10,521,551    10,521,551

American Century Investments     American Century Equity
                                    Growth Fund                  3,433,096                 3,433,096     3,433,096

American Century Investments     Twentieth Century Ultra Fund    4,165,694                 4,165,694     4,165,694

LaSalle National Bank, N.A.      Short Term Investment Fund      8,129,727                 8,129,727     8,129,727

LaSalle National Bank, N.A.      Short Term Investment Fund      3,804,919                 3,804,919     3,804,919

LaSalle National Bank, N.A.      Short Term Investment Fund                   8,132,619    8,132,619     8,132,619

LaSalle National Bank, N.A.      Short Term Investment Fund                   3,810,053    3,810,053     3,810,053

SERIES OF TRANSACTIONS + 5%

American Century Investments     Benham Stable Asset Fund       10,955,668   12,312,202   12,312,202    23,267,870

American Century Investments     Benham GNMA Fund                1,604,048    1,555,447    1,555,007     3,159,495           440

Barclays PLC Bank                Barclays Equity Index Fund      3,034,089    2,838,599    2,836,906     5,872,688         1,693

American Century Investments     American Century Value Fund     2,123,226    2,025,233    2,027,540     4,148,459        (2,307)

American Century Investments     American Century Equity
                                    Growth Fund                  4,469,077    4,180,399    4,179,834     8,649,476           565

American Century Investments     Twentieth Century Ultra Fund    5,605,685    5,061,716    5,071,421    10,667,401        (9,705)

American Century Investments     Twentieth Century
                                    International Growth Fund    1,894,311    1,911,503    1,917,956     3,805,813        (6,453)

Commercial Intertech Corp.       Common Stock                    6,599,641    4,547,107    4,209,454    13,146,748      (337,653)




                                       18


   21



                        Commercial Intertech 401(k) Plan

                   Audited Financial Statements and Schedules

                           December 31, 1997 and 1996

                                    CONTENTS

                                                                                                     
REQUIRED INFORMATION
Report of Independent Auditors ..................................................................       1

FINANCIAL STATEMENTS PROVIDED

Statements of Net Assets Available for Plan Benefits ............................................       2
Statement of Changes in Net Assets Available for Plan Benefits ..................................       3
Notes to Financial Statements ...................................................................       4

SCHEDULES

Item 27(a)--Schedule of Assets Held for Investment Purposes ......................................      17
Item 27(d)--Schedule of Reportable Transactions...................................................      18





   22
                                   SIGNATURES


Pursuant to the requirements of the Securities Exchange Act of 1934, the
Trustees (or other persons who administer the plan) have duly caused this
annual report to be signed by the undersigned thereunto duly authorized.

Date: June 29, 1998                     Commercial Intertech
                                          401(k) Plan
                                        
                                        By: James M. Donchess
                                           -----------------------------
                                            James M. Donchess
                                            Corporate Attorney, Benefits