Check Valves: Flanged, Lug, Wafer, and Butt-welding, Tenth Edition, Includes Errata 1 (2026)
STANDARD published on 1.9.2026
Designation standards: API STD 594
Publication date standards: 1.9.2026
The number of pages: 45
Approximate weight : 135 g (0.30 lbs)
Country: American technical standard
Category: Technical standards API
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.