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OS&Y,Rising stem,Plug Disc
Bolted Bonnet,Threaded or welded seat ring
ASTM A216 WCB,A217 WC6,A351 CF8,A351 CF8M,
A351 CF3,A351 CF3M,A351 CN7M
Standards compliance
Design and Manufacture: ANSI B16.34,BS1873
Face tu face(end tu end): ANSI B16.10
Flanged connection: to ANSI B16.5
Butt welded end: ANSI B16.25
Test and inspection: API598
A.Anti-friction ball thrust bearing: Reduces friction between mating parts to ensure smooth operation
B.Grub screw: Secures yoke nut in the bonnet
C.Grease nipple: Supplies lubricant to the mating parts
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