Exhibit 21.1

Subsidiaries of Robbins & Myers, Inc.

Robbins & Myers, Inc. has the following subsidiaries all of which (i) do
business under the name under which they are organized and (ii) are included in
our consolidated financial statements. The names of such subsidiaries are set
forth below.

Jurisdiction
in which Percentage of
Incorporated Ownership
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Chemineer de Mexico, S.A. de C.V. Mexico 100
Chemineer, Asia, Ptd. Ltd. Singapore 100
Chemineer, Inc. Delaware 100
Dioptec Scan Limited United Kingdom 100
Edlon, Inc. Delaware 100
FrymaKoruma GmbH Germany 100
Glasteel Parts and Services, Inc. Delaware 100
GMM Pfaudler Limited India 51
Ingeniere Pharmaceutique Modulaire S.A. France 50
Laetus am Sandberg Geratebau GmbH Germany 100
Moyno de Mexico, S.A. de C.V. Mexico 51
Moyno, Inc. Delaware 100
Pfaudler Equipamentos Industrias Ltda. Brazil 100
Pfaudler S.A. de C.V. Mexico 100
Pfaudler Speiss A.G. Switzerland 100
Pfaudler, Inc. Delaware 100
Pfaudler-Werke GmbH Germany 100
R&M Energy Systems de Venezuela, C.A. Venezuela 100
Robannic Overseas Finance A.V.V. Netherlands Antilles 100
Robbins & Myers Belgium S.A. Belgium 100
Robbins & Myers Canada, Ltd. Canada 100
Robbins & Myers de Mexico, S.A. de C.V. Mexico 100
Robbins & Myers Energy Systems L.P. Texas 100
Robbins & Myers Energy Systems, Inc. Delaware 100
Robbins & Myers GmbH Germany 100
Robbins & Myers Holdings, Inc. Delaware 100
Robbins & Myers International Sales Co., Inc. U.S. Virgin Islands 100

Robbins & Myers Singapore Private Limited Singapore 100
Robbins & Myers U.K. Limited England 100
Rodic S.A. de C.V. Mexico 100
Romaco A.G. Switzerland 100
Romaco Argentina S.A. Argentina 50
Romaco Australia Pty Ltd. Australia 100
Romaco Bosspak Australia 51
Romaco Finance B.V. Netherlands 100
Romaco Holdings U.K. Limited United Kingdom 100
Romaco Inc. Delaware 100
Romaco International B.V. Netherlands 100
Romaco Limited Hong Kong 100
Romaco Machinery Limited Ireland 100
Romaco Machinery, S.A. Spain 100
Romaco N.V. Netherland Antilles 100
Romaco Pharmatechnik GmbH Germany 100
Romaco S.A. Colombia 100
Romaco S.A.M. Monaco 100
Romaco S.a.r.l. France 100
Romaco S.p.A. Italy 100
Romaco UK Limited United Kingdom 100
Suzhou Pfaudler Glass-Lined Equipment Co., Limited China 76
Tycon Technoglass S.p.A. Italy 100
Universal Glasteel Equipment Delaware 50
Zanchetta & C. S.r.L. Italy 100