Check Valve

DIN Flanged Lift Check Valve DN50 PN160 WCB

The WBC lift check valve is designed according to DIN 3840. PN150 and DN50, namely it is 2 inch and can be put in environment under 15 Mpa. What’s more, the lift check valve is also referred as piston check valve.

Piston Check Valve WCB Lift Check Valve PN160 Check Valve
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4'' Class 300 Nozzle type Non Slam Check Valve WCB

The stainless steel non return valve features in non slam type disc, INCOENL X750 spring, WCB+STL valve body. This valve owns an excellent dynamic performance and minimizes vibrations and noise.

Non Slam NR Valve Non Slam Lift Vertical Check Valve Nozzle type WCB Check Valve
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Lift Check Valve 3 Inch RF WCB Class 600

The lift check valve has the construction of bolted bonnet and RF flange end. Made of carbon steel, the 3 inch check valve is designed for a pressure condition up to 600LB.

3 inch Lift Check Valve WCB Class 600 Check Valve WCB Piston Check Valve 3 inch
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Single Disc Swing Check Valve 6 Inch 150LB Wafer

The 6 inch 150 LB single disc swing check valve, designed per API 594, has one disc and wafer connection. It will have the best performance under -29 to 350 Celsius degree.

Single Disc Swing Check Valve 6 Inch Wafer Check Valve 150LB Check Valve
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Swing Non Return Valve 8 Inch 900LB Stainless Steel

The 8 inch swing check valve is designer as per BS1868 with bolted cover, 900LB RTJ end, reduced bore, as well as stainless steel body and trim material. Dervos could also do customizing service according to clients’ requests on sizes, design ratings, materials, and standards and so on.

8 Inch Check Valve Swing Non Return Valve Swing Check Valve 8 Inch
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Cast Steel Swing Check Valve 30 Inch 300LB BS1868

The large size 30 inch 300LB check valve is designed with swing type disc, bolted bonnet, flanged connection and a hydraulic cylinder & counter weight. We could also do customizing service as per clients’ requests on sizes, design ratings, materials, and standards and so on.

Large Size Check Valve BS 1868 Check Valve 30 Inch Swing Check Valve 30 Inch
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API 594 Dual Disc Wafer Check Valve 10 Inch 150LB WCB

Wafer check valve features short face to face dimension, compact structure and light weight. The valve is designed with wafer connection type, 10 inch nominal size and Class 150 pressure rating as per API 594. The carbon steel valve body and stainless steel trim make it applicable for general oil, gas and water application.

Dual Plate Check Valve API 594 Wafer Check Valve Dual Plate Wafer Check Valve
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DIN 3840 Swing Check Valve DN200 PN40 Cast Steel

Made of high-quality casting, the DIN swing check valve has a cast steel body with bolted bonnet structure and flange connection. The valve is designed with good sealing performance and minimal water hammer effect.

Cast Steel Swing Check Valve Flanged Swing Check Valve DN200 Swing Check Valve
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Bolted Bonnet Piston Check Valve PN16 Stainless Steel

The piston check valve has the construction of bolted bonnet and raised face flange end. The stainless steel check valve is with design pressure PN16 and nominal diameter DN 65.

Dervos could also do customizing service as per clients’ requests on sizes, design ratings, materials, and standards and so on.

PN16 Stainless Steel Check Valve Bolted Bonnet Piston Check Valve BB SS Piston Check Valve
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