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Product type |
check valve |
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Product description |
Double-clack check valve |
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Model |
H76 double disk check valve |
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Nominal diameter |
NPS 2”～48”(DN50～DN1200) |
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Operating temperature |
-29℃～593℃(the range of service temperature may vary for different materials) |
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Nominal pressure |
CLASS 150～2500 (PN20～PN420) |
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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. |
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Design standard |
API 6D,API 594,ASME B16.34 |
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Structural length |
API 6D,API 594 |
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Connecting end |
ASME B16.5,ASME B16.47,GB/T 9113 |
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Test standard |
API 598,ISO 5208,GB/T 26480,GB/T 13927 |
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Operation method |
The valve clack is automatically opened and closed under the medium force to prevent flowing to another direction. |
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Application fields |
For application in fields such as electric power industry, petroleum refining, petrochemical engineering, offshore oil, tap water engineering in urban construction, chemical engineering, etc. |
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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. |
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Other remarks 2 |
Short closing travel of valve clack, and small impact at valve closing; short structural length, most suitable for positions with limited mounting space |
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Other remarks 3 |
Suitable for medium backflow prevention in pipeline or device |
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Other remarks 4 |
Built-in pin roll, without external leakage point |
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Other remarks 5 |
Due to loading of spring, the valve clack can move flexibly without jamming, and has a good sealing performance. |
