Active standard | Published: 01/09/2026

API STD 594

Check Valves: Flanged, Lug, Wafer, and Butt-welding, Tenth Edition, Includes Errata 1 (2026)

Available languages: English

Available design: electronic (protected pdf), Print design

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Detail information

Designation: API STD 594

Publication date: 01/09/2026

Pages: 45

Country: American technical standard

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Anotation

This standard covers the design, materials, face-to-face dimensions, pressure-temperature ratings, inspection, examination, and testing requirements for check valves type A and type B.Other types of check valves, such as axial disc or body/stem guided disc (center spring type) valves, nozzle-type check valves, or lift-type check valves, are not included in this standard.The purchase of this document includes an Excel® spreadsheet.

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