About Check Valves
A Check Valve, clack valve, non-return valve or one-way valve is a mechanical device, a Check Valve, which normally allows fluid (liquid or gas) to flow through it in only one direction.
Check Valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of Check Valves used in a wide variety of applications.
Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, many Check Valves are very small, simple, and/or cheap. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any Check Valve handle or stem.
The bodies (external shells) of most Check Valves are made of plastic or metal.
An important concept in Check Valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate. Typically the Check Valve is designed for and can therefore be specified for a specific cracking pressure.
Check Valves Product List
- Swing Check
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Product Details Swing Check 
Design and Manufactur BS1868, ASME B16.34, API 6D Face to Face Dimension ASME B16.10, API 6D, EN 558, (DIN 3202) Flange Connection Dimension ASME B16.5, ASME B16. 47, (DIN 2501) BW Connection Dimension ASME B16.25 Pressure-Temperature Ratings ASME B16.34 Test and Inspection API 598 NPS 2"~48" Class 150lb~900lb Main Material WCB, WCA, WCC, WC6, WC9, C5, C12, LCB, LCC, CF8, CF8M, CF3, CF3M, CF8C, CN7M - Swing With Damping Device
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Product Details Swing With Damping Device 
Design and Manufactur BS 1868, API 6D, ASME B16.34 Face to Face Dimension ASME B16.10, API 6D, DIN 3202 Flange Connection Dimension ASME B16.5, ASME B16.47 BW Connection Dimension ASME B16.25 Pressure-Temperature Ratings ASME B16.34 Test and Inspection API 598 NPS 2"-48" Class 150LB-900LB Main Material WCB, WCC, WC6, WC9, C5, C12, C12A, LCB, LCC, LC1, LC3, CF8, CF8M, CF3, CF3M, CF8C - Pressure Sealed Swing Check
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Product Details Pressure Sealed Swing Check 
Design and Manufactur BS1868, ASME B16.34, API 6D Face to Face Dimension ASME B16.10, API 6D, EN 558, (DIN 3202) Flange Connection Dimension ASME B16.5, ASME B16. 47, (DIN 2501) BW Connection Dimension ASME B16.25 Pressure-Temperature Ratings ASME B16.34 Test and Inspection API 598 NPS 2"~36" Class 900lb~2500lb Main Material WCB, WCA, WCC, WC6, WC9, C5, C12, LCB, LCC, CF8, CF8M, CF3, CF3M, CF8C, CN7M - Titling Disc
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Product Details Titling Disc 
Design and Manufactur BS1868, ASME B16.34, API 6D Face to Face Dimension ASME B16.10, API 6D, EN 558, (DIN 3202) Flange Connection Dimension ASME B16.5, ASME B16. 47, (DIN 2501) BW Connection Dimension ASME B16.25 Pressure-Temperature Ratings ASME B16.34 Test and Inspection API 598 NPS 2"~36" Class 150lb~1500lb Main Material WCB, WCA, WCC, WC6, WC9, C5, C12, LCB, LCC, CF8, CF8M, CF3, CF3M, CF8C, CN7M - Wafer Single Plat
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Product Details Wafer Single Plat 
Design and Manufactur API 594, ASME B16.34, API 6D Face to Face Dimension API 594, API 6D, EN 558, (DIN 3202) Flange Connection Dimension ASME B16.5, ASME B16. 47, (DIN 2501) Pressure-Temperature Ratings ASME B16.34 Test and Inspection API 598, API 6D NPS 2"~48" Class 150lb~1500lb Main Material WCB, WCA, WCC, WC6, WC9, C5, C12, LCB, LCC, CF8, CF8M, CF3, CF3M, CF8C, CN7M - Wafer Dual Plate Check
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Product Details Wafer Dual Plate Check 
Design and Manufactur API 594, ASME B16.34, API 6D Face to Face Dimension API 594, API 6D, EN 558, (DIN 3202) Flange Connection Dimension ASME B16.5, ASME B16. 47, (DIN 2501) Pressure-Temperature Ratings ASME B16.34 Test and Inspection API 598, API 6D NPS 2"~48" Class 150lb~1500lb Main Material WCB, WCA, WCC, WC6, WC9, C5, C12, LCB, LCC, CF8, CF8M, CF3, CF3M, CF8C, CN7M - Wafer Lugged
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Product Details Wafer Lugged 
Design and Manufactur API 594, ASME B16.34, API 6D Face to Face Dimension API 594, API 6D, EN 558, (DIN 3202) Flange Connection Dimension ASME B16.5, ASME B16. 47, (DIN 2501) Pressure-Temperature Ratings ASME B16.34 Test and Inspection API 598, API 6D NPS 2"~48" Class 150lb~1500lb Main Material WCB, WCA, WCC, WC6, WC9, C5, C12, LCB, LCC, CF8, CF8M, CF3, CF3M, CF8C, CN7M - Horizontal Lift/dt>
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Product Details Horizontal Lift 
Design and Manufactur BS1868, ASME B16.34 Face to Face Dimension ASME B16.10, EN 558, (DIN 3202) Flange Connection Dimension ASME B16.5, ASME B16. 47, (DIN 2501) Pressure-Temperature Ratings ASME B16.34 Test and Inspection API 598 NPS 2"~16" Class 150lb~1500lb Main Material WCB, WCA, WCC, WC6, WC9, C5, C12, LCB, LCC, CF8, CF8M, CF3, CF3M, CF8C, CN7M - Vertical Lift
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Product Details Vertical Lift 
Design and Manufactur BS1868, ASME B16.34 Face to Face Dimension ASME B16.10, EN 558, (DIN 3202) Flange Connection Dimension ASME B16.5, ASME B16. 47, (DIN 2501) Pressure-Temperature Ratings ASME B16.34 Test and Inspection API 598 NPS 2"~14" Class 150lb~600lb Main Material WCB, WCA, WCC, WC6, WC9, C5, C12, LCB, LCC, CF8, CF8M, CF3, CF3M, CF8C, CN7M - Wafer Lift Check
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Product Details Wafer Lift Check 
Design and Manufactur API 594, ASME B16.34 Face to Face Dimension API 594, API 6D, EN 558, (DIN 3202) Flange Connection Dimension ASME B16.5, (DIN 2501) Pressure-Temperature Ratings ASME B16.34 Test and Inspection API 598 NPS 1"~6" Class 150lb~600lb Main Material WCB, WCA, WCC, WC6, WC9, C5, C12, LCB, LCC, CF8, CF8M, CF3, CF3M, CF8C, CN7M - Download Check Valves Catalogue
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Download Check Valves Catalogue
Certificate of Warranty
GOC warrant that all the valves are new, unused, and all the materials conform to the ASTM/ASME standard and all the valves have been tested as per API 598 or API 6D. We further warrant that all valves supplied have no defects arising from design, materials. This warranty will remain for twelve (12) months after the date of shipment from the port of loading.