H41W Lift Flanged Check Valve

• Media: Oil
• Temperature: Ordinary Temperature
• Material: Stainless Steel
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: H41W
• Connection Form: Flange
• Structure: Elevated
• Pressure: Ordinary Pressure
• Function: Non-Return
• Sealing Form: Bellows Globe Valve
• Flow Direction: Unidirection
• Standard: GB
• Application: Industrial Usage, Water Industrial Usage
• Flange Type: Pl
• Sealing Face: FF/RF Option
• Marking: Engraved as Request
• Investment: Casting Steel Body
• Transport Package: Snack Leather Bag and Seaworthy Plywood Case
• Specification: CE/ISO9001
• Trademark: YUZHENG & OEM
• Origin: R. P. C
• HS Code: 8481804090
• Production Capacity: 500 PCS/Week

Product Description

H41W Lift Flanged Check Valve

 

Description
Diameter	1/2"~8"
Material	SS304/SS316/WCB
Pressure	PN16/PN25/PN40
Temperature	-100~220 degree
Sealing	Metal to Metal
Medium	W.O.G and some corrosive liquid
Guarantee	12 Months
Face to Face Standard	JB2887-81
Testing Standard	GB/T 13927-92

The valve is opened/closed by the valve disc moving in a direction parallel to the valve seat hole axis and can only be installed on horizontal pipelines with the major function of preventing medium backflow when shutting down the pump and maintaining the water column required by pumping.

Design:
Design standard as per: BS1868, ASME B16.34, GB/T 12235.
Compact and reasonable product structure, reliable tightness and good performance;
Lift piston type disc;
Rapid closing and flexible actions of the valve disc
Small closing impact, water hammer is not liable to be generated;

Description
Bolted Bonnet; Swing and lift disc; Metallic seating surfaces.

Body and Bonnet Connection
The body and bonnet of Class150~Class900 check valves are usually with studs and nuts. And the body and bonnet of Class1500~Class2500 check valves are usually of pressurized seal design.

Body-To-Bonnet Joint
Stainless steel + flesible graphite wounded gasket is used for Class 150 and Class 300 check valve; Stainless steel + flexible graphite wounded gasket is used for Class 600 check valve, and joint gasket is also optional for Class 600 check valve; Ring joint gasket is used for Class900 check valve; Pressurized seal design is used for Class 1500~Class 2500 check valves.

Seat
For carbon steel check valve, the seat is usually forged steel. The sealing surface of the seat is spray welded with hard alloy specified by the customer. Renewable threaded seat is used for NPS<10 check valves, and welded on seat can be also optional if being requested by the customer. Welded on seat is used for NPS>12 crbon steel gate valves. Forstainless steel check valve, integral seat is usually adopted, or to weld hard alloy directly integrally. Threaded or welded on seat is also optional for stainless steel check valve if being requested by the customer.