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.



|                                                           |  |                                  |  |                       
|---------------------------------------------------------- |  | -------------------------------- |  | ----------------------
|                                                           |  | Jurisdictionin whichIncorporated |  | Percentage ofOwnership
|Chemineer, Inc.                                            |  | Delaware                         |  | 100                   
|Cor-Val, Inc.                                              |  | Delaware                         |  | 100                   
|Dalian Moyno Pump Co., Ltd.                                |  | China                            |  | 62                    
|Edlon Inc.                                                 |  | Delaware                         |  | 100                   
|Energy Equipment Corporation                               |  | Texas                            |  | 100                   
|Energy Equipment Corporation Limited                       |  | United Kingdom                   |  | 100                   
|GMM Mavag AG                                               |  | Switzerland                      |  | 51                    
|GMM Pfaudler Limited                                       |  | India                            |  | 51                    
|HP&T Products, Inc.                                        |  | Texas                            |  | 100                   
|KC Machine, LLC                                            |  | Wyoming                          |  | 100                   
|Manifold Valve Services, Inc.                              |  | Delaware                         |  | 100                   
|Mavag AG                                                   |  | Switzerland                      |  | 51                    
|Moyno de Mexico, S.A. de C.V.                              |  | Mexico                           |  | 51                    
|Moyno, Inc.                                                |  | Delaware                         |  | 100                   
|O & M Equipment, Inc.                                      |  | Delaware                         |  | 100                   
|Pfaudler Equipamentos Industriais Ltda.                    |  | Brazil                           |  | 100                   
|Pfaudler Werke GmbH                                        |  | Germany                          |  | 100                   
|Pfaudler, Inc.                                             |  | Delaware                         |  | 100                   
|Pipeline Valve Specialty, Inc.                             |  | Delaware                         |  | 100                   
|Preferred Industries, Inc.                                 |  | Delaware                         |  | 100                   
|PT. R&M Energy Systems Indonesia                           |  | Indonesia                        |  | 100                   
|R&M Energy Systems Australia Pty. Ltd                      |  | Australia                        |  | 100                   
|R&M Energy Systems de Argentina S.A.                       |  | Argentina                        |  | 100                   
|R&M Energy Systems de Venezuela, C.A.                      |  | Venezuela                        |  | 100                   
|R&M Energy Systems LLP                                     |  | Kazakhstan                       |  | 100                   
|Robannic Overseas Finance A.V.V.                           |  | Netherlands                      |  | 100                   
|Robbins & Myers (Suzhou) Process Equipment Company Limited |  | China                            |  | 100                   
|Robbins & Myers B.V.                                       |  | Netherlands                      |  | 100                   



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|                                                          |  |                |  |    
|--------------------------------------------------------- |  | -------------- |  | ---
|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 Holdings U.K. Limited                     |  | United Kingdom |  | 100
|Robbins & Myers Holdings, Inc.                            |  | Delaware       |  | 100
|Robbins & Myers Italia S.r.l.                             |  | Italy          |  | 100
|Robbins & Myers N.V.                                      |  | Netherlands    |  | 100
|Robbins & Myers U.K. Limited                              |  | England        |  | 100
|Rodic S.A. de C.V.                                        |  | Mexico         |  | 100
|Suzhou-Pfaudler Glass-Lined Equipment Company Limited     |  | China          |  | 100
|T-3 Canadian Holdings, Inc.                               |  | Delaware       |  | 100
|T-3 Custom Coating Applicators, Inc.                      |  | Delaware       |  | 100
|T-3 Energy Preferred Industries Mexico, S. de R.L. de C.V |  | Mexico         |  | 100
|T-3 Energy Services Aswan Middle East LLC                 |  | U.A.E          |  | 49 
|T-3 Energy Services Canada, Inc.                          |  | Canada         |  | 100
|T-3 Energy Services Cayman Holdings, Ltd.                 |  | Cayman Islands |  | 100
|T-3 Energy Services Cayman, Ltd.                          |  | Cayman Islands |  | 100
|T-3 Energy Services India Private Limited                 |  | India          |  | 100
|T-3 Energy Services International, Inc.                   |  | Delaware       |  | 100
|T-3 Energy Services Mexico S. de R.L. de C.V.             |  | Mexico         |  | 50 
|T-3 Energy Services, Inc.                                 |  | Delaware       |  | 100
|T-3 Investment Corporation IV                             |  | Delaware       |  | 100
|T-3 Management, Inc.                                      |  | Delaware       |  | 100
|T-3 Mexican Holdings, Inc.                                |  | Delaware       |  | 100
|T-3 Property Holdings, Inc.                               |  | Delaware       |  | 100
|T-3 Rocky Mountain Holdings, Inc.                         |  | Delaware       |  | 100
|T-3 Support Services, Inc.                                |  | Delaware       |  | 100
|Tarby of Delaware, Inc.                                   |  | Delaware       |  | 100
|The Rex Group, Inc.                                       |  | Texas          |  | 100
|Triple Merger II, Inc.                                    |  | Delaware       |  | 100
|Tycon Technoglass S.r.l.                                  |  | Italy          |  | 100
|UGE do Brasil Comercial Ltda.                             |  | Brazil         |  | 50 
|United Wellhead Services, Inc.                            |  | Delaware       |  | 100
|Universal Glasteel Equipment                              |  | Ohio           |  | 50 



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|                                            |  |         |  |   
|------------------------------------------- |  | ------- |  | --
|Universal Glasteel Equipment Romania S.r.l. |  | Romania |  | 50