Cast steel API gate valve
MATERIAL
Body: ASTM A216 WCB
Disc: ASTM A216 WCB
Seat: ASTM A29M 1035
Stem: ASTM A276 420
Gasket: 304+graphite
Bonnet: ASTM A216 WCB
Upper sealing: ASTM A276 420
Filling: 304+graphite
York nut: ASTM A439-D2
Handwheel: ASTM A536 F33100
STANDARD
Design and manufacture: API600, ANSI B16.34
Face to face: ANSI B16.10
Flange end: ANSI B16.5
Inspection: API 598
Pressure-temp rating: ANSI B16.34
TEST PRESSURE
Shell test: 3.1mpa
Seal test: 2.2mpa
Back seal test: 2.2mpa
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