Three Pieces Forging F316 Ball Valve NPT ends

Fire safe design

Coosai ball valves ensures 100% pass of the fire safe test.All the possible external leakage point between stem and body,body and adapter applies two sealed design,primary O-ring seals and secondary metal graphite spiral wound gasket. When the O-Ring were burned, the secondary stainless steel+graphite still can prevent the process medium from external leakage . Valve design fully accords with API 607, API 6FA, BS 6755, JB / T 6899 and other standards,

Fire seals lip, when the soft seat were burned, the ball will be pushed to the seals lip and form a seal in emergence to prevent large spill.

Blow-out proof stem:

The stem is made separately from the ball with integral T-type round shoulder, retained by bland .(other designs are Available on request)

Anti-static device:

Spring plus graphite type anti-static device are applied between the ball ,stem, gland Flange and body to keep the electrical Continuity between all the metallic components . And ensure the resistance lower than the most severe service requirement.

Sealing Options

Soft seat Metal to Metal O-Ring seal

Simple structure reliable sealing Applicable to particulate Reliable sealing low torque meet customers' high

wide application low cost. media conditions sealing reliability and low torque requirements

Design Data

Design standard: API 6D,DIN3357-1 , EN12516-1

Face to Face standard: API6D, ASME B16.10, DIN3202

Connecting Standard: ASME B 16.5, ASME B16.47, DIN 2543/4,ASME B 16.25

Test & Inspect Standard: API 6D ,API 598

Working Temperature: -196℃~610℃

Connection type: RF,RTJ,FF,BW.BSPT,NPT

Sour environment:NACE MR0175

Design Feature

1: Full bore or reduced bore
2: Two-Piece downstream sealing
3: Fire safe design(API 607)
4: Blowout-proof system
5: Anti-static design
6: Fugitive emission testing(optional)

Main Material

The ball is seat supported for size 8” and smaller.