China wholesale Newman Valve - Dual Wafer Check Valves,Retainless Type

China wholesale Newman Valve - Dual Wafer Check Valves,Retainless Type – 3E

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China wholesale Newman Valve - Dual Wafer Check Valves,Retainless Type – 3E Detail:

Product Description

Product description	Double-clack check valve
Model	Hn76H-double-clack check valve
Nominal diameter	NPS 2”～60”(DN50～DN1500)
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)、A216 WCB、WCC; A217 WC6、WC9 ;B 148 C95800、C95500, A351 CF8、CF8M、CF3、CF3M，etc.
Design standard	API 6D、API 594、ASME B16.34
Structural length	API 6D、API 594
Connecting end	ASME B16.47、ASME B16.5
Test standard	API 598、ISO 5208
Operation method	The valve clack is automatically opened and closed under the medium force to prevent flowing to another direction.
Application fields	For application fileds- petroleum refining, petrochemical engineering ，electric power industry , offshore oil, chemical engineering, etc.
Other remarks 1	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 2	Due to loading of spring, the valve clack can move flexibly without jamming, and has a good sealing performance.
Other remarks 3	Suitable for medium backflow prevention in pipeline or device
Other remarks 4	Built-in pin roll, without external leakage point

Available retainer type and retainerless type

Testing is available including

All bodies and plates certified to EN 10204 3.1 as a minimum

Surface finish to MSS SP-55 on cast components

All valves are hydrostatically tested as per API 598

Hydrostatic pressure testing up to 15,000psig

Tensile/Bend/Impact/Hardness testing

Magnetic particle test

Dye Penetrant test

Ultrasonic examination

Chemical analysis

Positive material identification(PMI)

Ferrite content verification

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