EXHIBIT 21

SCHEDULE OF SUBSIDIARIES

Subsidiaries of CIRCOR International, Inc.

I. Subsidiaries of CIRCOR International, Inc.:

1.    CIRCOR (Jersey) Ltd., a Jersey Company (83% ownership)

2.    CIRCOR Aerospace, Inc., a Delaware Corporation

3.    CIRCOR Energy Products, Inc., an Oklahoma Corporation

4.    CIRCOR Luxembourg Holdings Sarl, a Luxembourg Limited Liability Company (39%)

5.    Dovianus B.V., a Netherlands Corporation

6.    CIRCOR France, a French Corporation

7.    Leslie Controls, Inc., a Delaware Corporation

8.    Patriot Holdings, Inc., a Colorado Corporation

9.    Spence Engineering Company, Inc., a Delaware Corporation

10.    CIRCOR German Holdings Management GmbH, a German Closed Corporation

11.    Downstream Holding, LLC., a Delaware Limited Liability Company

II. Subsidiaries of CIRCOR Aerospace, Inc.:

1.    CIRCOR IP Holding Co., a Delaware Corporation

2.    CIRCOR Instrumentation Technologies, Inc., a New York Corporation

3.    CIRCOR Luxembourg Holdings Sarl., a Luxembourg Limited Liability Company (<1%)

III. Subsidiaries of CIRCOR Instrumentation Technologies, Inc.:

1.    CIRCOR (Jersey) Ltd., a Jersey Company (17% ownership)

2.    Dopak Inc., a Texas Corporation

3.    CIRCOR Mexico, S.A. de C.V., a Mexico Corporation (99%)

4.    CIRCOR Empleados de Mexico S.A. de C.V., a Mexico Corporation (99%)

IV. Subsidiaries of CIRCOR Energy Products, Inc.:

1.    CIRCOR Luxembourg Holdings Sarl., a Luxembourg Limited Liability Company (approx. 61%)

2.    CIRCOR LLC, a Massachusetts Limited Liability Company

3.    CIRCOR Mexico, S.A. de C.V., a Mexico Corporation (1%)

4.    CIRCOR Empleados de Mexico S.A. de C.V., a Mexico Corporation (1%)

V. Subsidiaries of CIRCOR (Jersey), Ltd.:

1.    CIRCOR German Holdings, LLC, a Delaware Limited Liability Company

VI. Subsidiaries of CIRCOR German Holdings, LLC:

1.    CIRCOR German Holdings GmbH & Co. KG, a German Private Company

VII. Subsidiaries of CIRCOR German Holdings GmbH & Co. KG:

1.    Regeltechnik Kornwestheim GmbH, a German Corporation

2.    SCHROEDAHL-ARAPP Spezialarmaturen GmbH & Co. KG, a German Corporation

VIII. Subsidiaries of CIRCOR Luxembourg Holdings, Sarl.

1.    CEP Holdings Sarl., a Luxembourg Limited Liability Company (6% ownership)

2.    CIRCOR Energy Products (Canada) ULC, an Alberta Unlimited Liability Company

3.    Howitzer Acquisition Limited, a United Kingdom Corporation

4.    CIRCOR India Holdings BV, a Netherlands Corporation

5.    CIRCOR Middle East FZE, a United Arab Emirates Corporation

6.    CIRCOR Do Brasil Particpaçöes LTDA, a Brazilian Corporation (>99%)

7.    CIRCOR (Barbados) Holdings SARL, a Barbados Company

IX. Subsidiaries of CIRCOR Do Brasil Particpaçöes LTDA.

1.    CIRCOR do Brasil Industria e Comercio LTDA, a wholly owned subsidiary of CIRCOR do Brasil Participacoes LTDA

X. Subsidiaries of CIRCOR Energy Products (Canada) ULC, an Alberta Unlimited Liability Company

1.    CEP Holdings Sarl., a Luxembourg Limited Liability Company (94% ownership)

XI. Subsidiaries of CEP Holdings, Sarl.

1.    Pibiviesse Srl., an Italian Company

2.    CIRCOR Do Brasil Particpaçöes LTDA, a Brazilian Corporation (1%)

XII. Subsidiaries of Pibiviesse, Srl.:

1. CIRCOR Valve Company, Ltd., a Chinese Foreign Owned Enterprise

XIII. Subsidiaries of Howitzer Acquisition Limited, a United Kingdom Corporation

1.    Hale Hamilton (Valves) Limited, a United Kingdom Corporation

2.    Pipeline Engineering Supply Co., Limited, a United Kingdom Corporation

3.    TapcoEnpro UK Limited, a United Kingdom Company

XIV. Subsidiaries of CIRCOR India Holdings BV, a Netherlands Corporation

1.    CIRCOR India LLC, a Delaware Limited Liability Company

2.    CIRCOR Flow Technologies India Private Ltd, an Indian Private Company

XV. Subsidiaries of CIRCOR France, a French Corporation

1.    CIRCOR Bodet, a French Corporation

2.    CIRCOR Maroc, a Moroccan Corporation

3.    CIRCOR Industria, a French Corporation

XVI.    Subsidiaries of Downstream Holding, LLC., a Delaware Limited Liability Company

1.TapcoEnpro Tracker, LLC., a Delaware Limited Liability Company

2.DeltaValve Tracker, LLC., a Delaware Limited Liability Company

XVII.    Subsidiaries of TapcoEnpro Tracker, LLC., a Delaware Limited Liability Company

1.Downstream Aggregator, LLC., a Delaware Limited Liability Company (29.019%)

XVII.    Subsidiaries of DeltaValve Tracker, LLC., a Delaware Limited Liability Company

1.Downstream Aggregator, LLC., a Delaware Limited Liability Company (70.981%)

XVIV.    Subsidiaries of Downstream Aggregator, LLC., a Delaware Limited Liability Company

1.TapcoEnpro, LLC., a Delaware Limited Liability Company

2.DeltaValve, LLC., a Delaware Limited Liability Company

3.CIRCOR Luxembourg Holdings Sarl, a Luxembourg Limited Liability Company (%)