Specification
Design Standard: BS 1873, ASME B16.34
Face to Face: ASME B16.10
End Flange: ASME B16.5,
Butt welding Ends: ASME B16.25
Inspection and Test: API 598
Features
Straight pattern body design
OS&Y, outside screw and yoke
Needle, parabolic, or plug disc
Renewable or welded seat
Bolted bonnet, back seal structure
Impact hand wheel for 6" and above
Extended stem design for low temperature
Locking devices is available