Specification of Forged Steel Piston Check Valve ANSI Class # 800
Design & construction: API 602, ASME / ANSI B16.34
End connections: SW ASTM / ANSI B16.11; NPT ASME / ANSI B1.20.1, class #800
Pressure & temperature: ASME / ANSI B16.34
Test: API 598
Fig. 1712: ASTM A105/F6 + 1/2 STELLITE (TRIM. N.8)
Fig. 1713: ASTM A182 F316/316 Materials
body-cover: forged steel A105, P250GH
spring: stainless steel A182 F6
sealing seat facing: A 182 F6
cover gasket: spiral wound AISI 304