Swing Check Valve with Lever and Counterweight

What is swing check valve with lever and counterweight?

The swing check valve with lever and counterweight has good anti-shock effect due to the presence of the counterweight, and it will work automatically when the flow stops. These swing check valves are available for horizontal and vertical installations. For vertical streamline installations, we recommend rotating the counterweight 90° clockwise so that the counterweight will be in a horizontal position when the valve is ready for use.

The swing check valve with lever and counterweight allows only one-way flow of media and prevents reverse flow. The flow of water opens the valve in the desired direction, while the backflow forces the valve to close. The elastomer-to-metal design ensures complete sealing. The valve is equipped with a disc position indicator. This operation is performed by lever counterweights.

Technical parameters and characteristics

Product Type: Swing Check Valve

Design Pressure: Class 150 - 2500 LB, PN10 - PN420.

Design Standards: BS 1868, API 6D, DIN 3352.

Design temperature: -196℃ - 630℃.

Material: ASTM A216 WCB, ASTM A216 WCC, ASTM A217 WC6, ASTM A217 WC9, ASTM A217 C5, ASTM A217 C12A, ASTM A352 LCB, ASTM A352 LCC, ASTM A351 CF8, ASTM A351 CF8M, ASTM A351 CF3M, ASTM A351 CF8C, CN3MN, CK3MCUN, CN7M, ASTM A890 4A(CD3MN), ASTM A890 5A(CE3MN),

ASTM A890 6A (CD3MWCuN), ASTM B148 C95800, ASTM B148 C95500.

Connection end: ASME B16.5, ASME B16.25, EN1092 series.

Body length according to EN 558-1 GR 48

Flange measured according to EN 1092-2, drilled according to EN 1092-2 | PN 10 standard; EN 1092-2 | PN 16 from DN 200

Please specify when ordering - other standards available upon request

Bolted Bonnet

API 6D full bore, BS 1868 standard bore

Inner or outer shaft

Mounting lever + external axle counterweight

Large size check valve mounted hydraulic damping cylinder

Application 

Electric power, oil refining, petrochemical, offshore oil, chemical industry, etc.

Advantage

Check valves protect pipelines and equipment from backflow of flowing media

The flap opens automatically in flow according to the arrow on the valve housing

Why do you need lever and weight check valve?

Large pipes can be severely damped. When the flow of water in the pipe is suddenly reversed, cracks may develop between the valve seat and the valve disc. The counterweight or damping device is designed to avoid cracking.

Swing check valves with counterweights or dampers are available for horizontal and vertical installations. For vertical streamline installations, we recommend rotating the counterweight 90° clockwise so that the counterweight or damper will be in a horizontal position when the valve is ready for use.

FAQ

Q: Are you a trading company or manufacturer?

A: We are manufacturer.

Q: What are your main products?

A: Our main products are all kinds of high and medium pressure valves including gate valve, globe valve, check valve, other special valves and various kinds of castings.

Q: What certificates do you own?

A: National special equipment manufacturing license certification, API, CE, ISO9001 and so on.

Q: Do you have your research and development team?

A: Yes, we do.

Q13: What's your minimum order quantity?

A13: One.

Q: How long is your delivery time?

A3: It depends on the quantity.

Q: How can you guarantee quality?

A: We have strict inspection before shipment. Don't hesitate to contact us if you have any problem after receiving the goods. We offer the best after-sale service.

Q: Why to choose you as our supplier from so many Chinese factories and traders?

A: We have rich experience in valve making and outstanding ability of technical processing, being specialized in this industrial for more than 30 years.

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