Cast Steel Flanged Bolted Cover Check Valve（H44H）
Swing check valves are unidirectional valves preventing backflow of media. Other terms used for these valves are non-return valve or one-way check valve. Check valves work automatically so there is no need for a wheel or actuator. Consider a check valve when there is imminent damage due to backflow or to prevent contamination. That being said, there should be the right orientation of the lone inlet and outlet to ensure that the check valves are functioning properly.
Size: NPS 2"~48",DN50-DN1200
Pressure Rating:Class 150lb-Class 2500lb,PN16-PN420
Body Material: carbon steel, stainless steel, alloy steel, etc
End connection: Flange end, Butt welded end
Design and Manufacture:API 6D / BS 1868
Face to face: ASME B16.10
Flange ends: ASME B16.5
Butt Weld ends: ASME B16.25
Inspection and test: API 598 / API 6D
1.Swing type disc;
2.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.
3.Disc stop device to prevent disc from being opened too high, thus causing failure to be closed down.
4.Solid pin is precisely installed and provided with high intensity to ensure operational performance and service life of valve.
5.Rocker arm is given enough intensity. Upon being closed down, it has enough freedom for the close-down of valve disc.
6.Large size check valve are provided with lifting rings for the convenience of hoisting.
Chemical, Refinery Plant
Gas Purification Plant
Power Station, Shipbuilding
Q:Why choose us ?
A: we are a manufacturer, we have been manufacturing check valve more than 20 years.
Q. what is your payment term?
A: T/T 30% down payment, balance to be paid before shipment. or L/C.
Q:Can we print our logo on your products?
A: yes, we offer OEM/ODM service, we support the customized logo, size, package,etc.
Q: what is your main market?
A: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Q: Can I get samples from your factory?
A: Yes, Samples can be provided.
Q: If products have some quality problem, how would you deal with?
A: We will responsible for all the quality problems.