General Description: KOS full opening check valve can be capable for pig ball cleaning service. For big size, to prevent potential water hammer damage caused by disc closing, a dashpot device can be assembled to control the disc closing time. Optional soft seat & metal seat.

Basic Design:             API 6D

Face-Face Dimension:     ASME B16.10

End Connection:          ASME B16.5, ASME B16.47, MSS SP44 , ASME B16.25
Test:                     API 598, BS 6755

Size:               2" ~48" (DN50 ~ DN1200)
Rating :             ANSI 150lb ~ 2500lb (PN16 ~ PN250)
Body Materials:      Carbon Steel, Stainless steel, Cr-Mo Alloy Steel
End connection:     RF, RTJ, B.W

Swing check design
Suitable for pig ball service
Soft or metal to metal seating
Welded or threaded seat ring
Optional weight lever design

Optional Pneumatic operated for quick shut off within 1 second

Refinery
Petrochemical
Power plant
General Industry