Applied Surface Technology S-4 Registration of securities issued in business combination transactions

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We hereby consent to the incorporation by reference in this Registration Statement on Form S-4 of our report dated February 25, 2015 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in EnPro Industries, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2014. We also consent to the reference to us under the heading “Experts” in the Registration Statement.

/s/ PricewaterhouseCoopers LLP

Charlotte, North Carolina

March 26, 2015