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Tilting Disc Check Valve (H77H/Y-C, H77X, H77W)

Dec 23, 2017

Basic Info

Model NO.: H77H/Y-C, H77X, H77W

Standard: GB

Certificate: ISO

Structure: Tubular

Connection Form: Thread

Nominal Diameter: DN40-DN1000

Nominal Pressure: 150LB - 900LB

Material: Stainless Steel

Body: CS/SS - WCB, WCA, WCC, A351, A744, 304, 304L, 316, 316L
Disc: Stainless steel - A351, 420S, S42000, 304, 304L, 316, 316L
Stem and sealing surface: A351, A744, 304, 304L, 316, 316L 

Flow Direction: Unidirection

Suitable Medium: Water, Oil, Gas and etc

Application: Industrial Usage, Water Industrial Usage, Household Usage


Technical standards:

Design and manufacture: API 6D
Face to face: ANSI B16.10
Flange end: ANSI B16.5
Inspection and test: API 598


Main Structural Features:

Simple and compact structure.   

Easy open and close for convenience of disassembly and servicing, basically linear flow characterstic.

Dependable seal, leak-tightnes and service life  of  over 20,000 times of open and close, eccentric structure, small torque of disc. 

Short stroke of center of gravity up on disc being closed, quick close and water hammer elimination. 

valve body is made of stainless steel or carbon steel, and sealing faces of valve stem and disc are both made of stainless steel.