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Check valve 4in 300LB RF flange end


CSV sample photo:

Check valve 4" 300LB RF flange end, bolted cap


Body/Cap: ASTM A216 WCB

Disc: ASTM A216 WCB+13CR

Seat: ASTM A105+13CR

Face to face dimension: 356mm

Valve standard: BS1868

Flange standard: ASME B16.5

Sealing pressure test: 57BAR

Shell pressure test: 78BAR



CSV  check valve

The check valve indicates a kind of valve in which the valve disc is automatically opened by the pressure produced by the flowing of the medium itself, and closed by the reverse pressure or the weight of the valve disc, so as to make the fluid flow toward one direction.The check valves include different types such as swing type, lift type and tilting disc type. Designed in accordance with specifications in API6D, the full-open type check valves of CSV Company are applied in transportation lines for crude oil and natural gas.

Describes the design and product range: 
◇ Design basis: ASME B16.34, GB12236, API6D
◇ Flanged ends: ASME B16.5, GB9113
◇ Butt-welding ends: ASME B16.25
◇ Face-to-face dimension: ASME B16.10, GB12221
◇ Inspection and test: API598, API6D, JB/T9092
◇ Pressure rating: Class150~2500, PN16~PN420
◇ Product range: 2"~36", DN50~DN900
◇ Materials of main parts: WCB, LCB, WC6, Wc9, C5, CF8M, Alloy20
◇ Trim materials: as per API600

Design features: 
◇ Swing type valve disc
◇ Tilting disc type valve disc
◇ Bolted bonnet
◇ Pressure self-sealing type bonnet
◇ Suitable for horizontal and vertical installation
◇ Flanged ends
◇ Butt-welding ends
◇ Pressure self-sealing type bonnet
◇ Overlay welding by hard alloy can be performed on the seat surface according to specifications in API600
◇ Replaceable valve seat ◇ Integral seat and back seat are adopted in stainless steel valves
◇ The built-in structure is adopted for connecting the pin and valve disc, so there is no external leakage point