Pressure Seal Swing Check Valve

GAIRUI Forged Pressure Seal Swing Check Valves is a valve which is automatically opened and closed by the flow of the medium itself. It is used to prevent the reverse flow of the medium. It is also called the reverse check valve, the one-way valve, the countercurrent valve and the back pressure valve. The check valve is an automatic valve. Its main function is to prevent the backflow of the medium, prevent the reversing of the pump and drive motor, and the discharge of the container medium. The check valve can also be used to supply pipelines where the pressure may exceed the system pressure. Disc check valve around the pin inside the valve seat. The disc check valve is simple in structure and can only be installed on horizontal pipes with good tightness.

Quick Detail

1. Size: 2''-48''(DN50~DN1200)
2. Pressure Rating: 150LB-2500LB/PN16~PN160/10K~60K)
3. Material:A351CF8M/CF8/CF3/CF3M,A216WCB,A105,A352LCB/LCC,F304,F316,F51/F53,F11,F2,C3,C95800
4. Suitable Temperature: -196ºC~650ºC( Different temperature choose different materials).
5. Suitable Medium: Water, Steam, Oil and natural gas etc.

Technical Specification

1. Standard Compliance: ANI 6D, BS 1868
2. Pressure-Temp. Rating: ANSI B16.34
3. Face to Face: ANSI B16.10
4. End Flange: ANSI B16.5/ASME B16.47
5. Butt Welding Ends: ANSI B16.25
6. Inspection and Test: Tested to API 598, BS 6755, Certified to EN10204 3.1B
7. Size: 2~36in
8. Working Pressure: 150LB~2500Lb
9. Suitable Medium: Oil, Nature Gas, Water, Steam; Acid, Alkali, Organic Compounds

Feature

1. Bolted bonnet, and the type of middle flange gasket may be different according to pressure class; Check valve in 600LB may adopt pressure sealed structure.
2. Disc stop device to prevent disc from being opened too high, thus causing failure to be closed down.
3. Solid pin is precisely installed and provided with high intensity to ensure operational performance and service life of valve.
4. Rocker arm is given enough intensity. Upon being closed down, it has enough freedom for the close-down of valve disc.
5. Large size check valve are provided with lifting rings for the convenience of hoisting.