Kairuite Cryogenic Top-entry Ball Valve

4〞DSQ367F-150LBR

Nominal Pressure：Class 150

Nominal Diameter：NPS 4

Body Material:  ASTM A351 CF8M

Ball & Seat Material:  ASTM A182 F316

Stem: ASTM A182 FXM-19

Stud: ASTM A320 B8 CL2

Nut: ASTM A194 8

Operation: Worm Gear

Design Temperature：-196℃

Medium: LNG 

Design Features:

1.DIB-2 Middle cavity self-decompression structure.

2.Bonnet is an integral extended structure, and the valve cover seal adopts a combination of spiral wound gasket and lip seal ring.

3.Stem seal adopts a combination of flexible graphite ring and lip seal, which has anti-static and fire-safe design.

4.All casting and forging materials are 100% immersed in a liquid nitrogen pool at -196℃ for cryogenic treatment after rough machining and before fine machining.