Manufactur standard Energy Products - Lug Dual Check Valves

Manufactur standard Energy Products - Lug Dual Check Valves – 3E

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Manufactur standard Energy Products - Lug Dual Check Valves – 3E Detail:

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Product description	Double-clack check valve
Model	Hn76H-double-clack check valve
Nominal diameter	NPS 2”～24”(DN50～DN600)
Operating temperature	-29℃～593℃(the range of service temperature may vary for different materials)
Nominal pressure	CLASS 150～2500 （PN20～PN420）
Material	Main material: A890 4A(CD3MN)、5A(CE3MN)、6A(CD3MWCuN);A216 WCB、WCC; A217 WC6、WC9;; A352 LCB、LCC; A、M35-1； ASME B 148 C95800、C95500；A351 CF8、CF8M、CF3、CF3M、CF8C，etc.
Design standard	API 6D、API 594、ASME B16.34
Structural length	API 6D、API 594
Connecting end	ASME B16.5、ASME B16.47、GB/T 9113
Test standard	API 598、ISO 5208、GB/T 26480、GB/T 13927
Operation method	The valve clack is automatically opened and closed under the medium force to prevent flowing to another direction.
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.
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	Short closing travel of valve clack, and small impact at valve closing; short structural length, most suitable for positions with limited mounting space
Other remarks 3	Suitable for medium backflow prevention in pipeline or device
Other remarks 4	Built-in pin roll, without external leakage point
Other remarks 5	Due to loading of spring, the valve clack can move flexibly without jamming, and has a good sealing performance.

Available retainer type and retainerless type

Independent spring design

A spring design of dual plate check valve(6” and larger) allows higher torque to be exerted against each plate with independent closing in response to the process stream.testing has proved this action provides about 20% improvement in valve life and 50% reduction in water hammer.Each of the dual plates has its own springs,which provide independent closing action

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