API 6D Full Open Swing Check Valve with Counter Weight
Pressure sealing cover, swing type disc
Threaded or welded seat ring
ASTM A216 WCB, A217 Wc6, A351 CF8, A351 CF8M,
A351 CF3, A351 CF3M, A351 CN7M
Standards compliance: Design and Manufacture: ANSI B16.34, API 6D, BS1868
Face to face(end to end): ANSIB16.10, API 6D
Flanged connection: 2"~24" to ANSI B16.5
Butt welded end: ANSI B16.25
Test and inspection: API 598, API 6D
A. Back up ring: Absorbs thrust applied by internal pressure.
B. Thrust ring: Pretects the soft metallic gasket from detemation.
C. Gasket Unique angutar design provides superior sealing.
Design and Manufacture
ANSI B16.34, API600, API6D, API603, BS1414
Face to face(end to end)
ANSI B16.10, API6D
2"~24" to ANSI B16.522", 26"~36" to MSS-SP-44 or to API605 on Request
FACE TO FACE
Test and inspection
Butt welded end
Technical parameters and characteristics:
Swing check valve
H44H-swing check valve
-196℃～593℃(the range of service temperature may vary for different materials)
Main material: A216 WCB,WCC;A217 WC6,WC9,C5,C12,C12A,CA15;A351 CF8,CF8M,CF3,CF3M,CF8C,CN3MN,CK3MCUN,CN7M;A352 LCB,LCC;A494 CW-6MC,CU5MCuC,M35-1；A995 4A(CD3MN),5A(CE3MN),6A(CD3MWCuN)；ASME B 148 C95800,C95500, etc.
API 6D,API 594,BS 1868,ASME B16.34,GB 12236,GB 12224
ASME B16.5,ASME B16.25,GB 9113,GB 12224
API 598,ISO 5208,JB/T9092,GB/T13927
The valve clack can be automatically opened and closed with the medium force, movement weight can be increased to facilitate fast closing of valve clack, hydraulic cylinder can be increased to facilitate slow closing of valve clack to prevent vibration of pipeline, and pigging can be performed through manual opening and locking the valve clack at the opening position.
For application in fields such as electric power industry, petroleum refining, petrochemical engineering, offshore oil, tap water engineering in urban construction, chemical engineering, etc.
Other remarks 1
The sealing faces of valve seat and valve clack are build-up welded with hard alloy to improve the erosion resistance and extend the service life of valve.
Other remarks 2
SS+ graphite or metallic seal or pressure self-sealing is adopted between valve body and bonnet for reliable sealing.
Other remarks 3
Suitable for medium backflow prevention in pipeline or device
Other remarks 4
Large check valves are designed with hydraulic damping cylinder to prevent the valve clack from bumping the valve seat, damaging the valve or causing pipeline vibration due to fast closing.
Other remarks 5
In case of pigging requirement, API 6D swing check valve can be manually operated to fix the opening position of valve clack, so as to achieve the pigging objective.