Pressure Sealed Swing Check Valve
Technical parameters and characteristics：
Product type | ON/OFF |
Product description | Pressure Sealed Swing Check Valve |
Model | H44H-Pressure Sealed Swing Check Valve |
Nominal diameter | NPS 2”～50”(DN50～DN1250) |
Operating temperature | -196℃～593℃(the range of service temperature may vary for different materials) |
Nominal pressure | CLASS 600～2500 （PN100～PN420） |
Material | 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; A890 4A(CD3MN)、5A(CE3MN)、6A(CD3MWCuN); ASME B 148 C95800、C95500, etc. |
Design standard | ASME B16.34、API 6D、API 594、BS 1868、GB/T 12236、GB/T 12224 |
Structural length | ASME B16.10、GB/T 12221 |
Connecting end | ASME B16.5、ASME B16.47、ASME B16.25、GB/T 9113、GB/T 12224 |
Test standard | API 598、ISO 5208、GB/T 26480、GB/T 13927 |
Operation method | 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. |
Application fields | For application in fields such as electric power industry, petroleum, 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 | The pressure self-sealing type is adopted between valve body and bonnet for reliable sealing, where the higher the pressure is, the better the sealing performance would be. |
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. |