API Gate valve, pressure seal bonnet,

OS&Y, Rising stem, Flexible wedge
Pressure seat Bonnet, Threaded or welded seat ring
ASTM A216 WCB, A217 WC6, A351CF8, A351CF8M, A351 CF3, A351 CF3M, A351 CN7M

Design and Manufacture: ANSIB16.34, API600, API6D, BS1414
Face to face(end to end): ANSIB16.10, API6D
Flanged connection: ANSI B16.5
Butt welded end: ANSIB16.25
Test and inspection: API598, API6D

A. Back up ring: Absors thrust applied by internal pressure
B. Thrust ring: Protects the soft metallic gasket from deformation
C. Gasket: Unique angular design provides superior sealing