Duplex stainless steel check valve is a type of valve that allows fluid to flow in a fixed direction and automatically prevents it from flowing in the opposite direction (backflow). A check valve made from duplex stainless steel offers high corrosion resistance. Its working principle relies on the fluid's own force, as well as the self-weight of the valve flap and the pressure of the spring. When fluid flows in the forward direction, it pushes the valve flap open, allowing smooth passage of the fluid. Conversely, when the fluid attempts to flow backward, the valve flap quickly closes to prevent reverse flow.
Duplex Stainless Steel Check Valve Specification
| Size: | 2"-36" |
| Pressure: | 150LB-2500LB |
| Body Material: | CD3MNWCuN, CW2M, Monel, CN7M, 20#Alloys, 4A, 5A, etc. |
| Seal Material: | STELLITE, 13Cr, SS304, SS316, etc. |
| Connection Type: | Flanged, Butt Welded, Socket Welded, NPT |
| Face to Face Dimension: | ASME B16.10 |
| Flange End Dimension: | ASME B16.5 |
| Butt Welded Dimension: | ASME B16.25 |
| Design and Manufacture: | BS1868,API 6D |
| Test Standard: | API 598,API 6FA, ISO 15848-1-2 |
duplex check valve
FAQ:
Q: What is your delivery time?
A: Usually 3-5 days if the items are in stock.
Q: What are your payment terms?
A: For orders up to $1,000, payment is 100% prepaid. For orders over $1,000, a 30% T/T deposit is required in advance, with the balance due before shipment.
Q: What are your core products?
A: Our main products include various types of valves, such as gate valves, globe valves, check valves, ball valves, and butterfly valves. These valves are suitable for industries including oil, gas, petrochemical, marine, energy, water, and waste treatment.
Q: What is the warranty period for your products?
A: The warranty period is 18 months from the date the products leave the factory. If any quality issues arise, we will repair or replace the products.
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