Low Pressure Check Valve Manufacturer
As a leading low pressure check valve manufacturer, U.S. Valve supplies check valves in a wide variety of configurations and materials. We are known for our unique Elastomer Design, which provides the lowest pressure drop and highest Cv in the industry. This design is available on all our Full Port check valves. ANSI dual plate wafer check valves, (which conform to ANSI / API specifications), and Silent Check Valves are the only check valves that do not come with our low ∆P elastomer design. These valves are suitable for any orientation including vertical up flow and downflow.
What is a check valve used for?
A check valve is a one-way valve that prevents backflow.
When should check valves be used?
When two or more pumps or blowers are installed in parallel, check valves are used to isolate the ones that are not operating. In some applications, backflow is detrimental to the process or to equipment and must be prevented.
How do check valves work?
Check valves have a mechanism either spring-loaded or not spring-loaded whereby the valve automatically closes once the flow through it is reduced below a minimum amount. When the flow increases again with stronger force, the valve will re-open and the media is once again able to pass through.
What are the types of check valves?
There are a wide variety of check valves including elastomer hinge, double-disc, piston, and ball check valves. They usually are available in various body types including FNPT, MNPT, Flanged, Wafer, and Grooved End.
Click on the valve categories below to learn more. We are a proud low pressure check valve manufacturer as well as a manufacturer of Techno™ Check Valves. Click on the link on the right side of the page to link to our Techno™ Check Valves.
Techno Check Valves
Techno check valves are top of the line and come in a variety of styles including flanged, grooved end, deep well, etc. More
Full Port Male NPT
Full Port Male NPT Check Valves are available in a wide variety of sizes and materials.More
Full Port Flanged
Full Port Flanged Check Valves with Elastomer hinges offer high Cv and the lowest pressure drop.More
Full Port Trans-Chek®
Our Full Port Trans-Chek® Valves have different size inlet and discharge flanges to accommodate changes in pipe diameter.More
Full Port Female NPT
Full Port Female NPT Check Valves are available in a wide variety of sizes and materials.More
Full Port Plain End
Use Full Port Plain End Check Valves when you need valves welded to piping, or want to use hose clamps.More
Full Port Grooved End
Full Port Grooved End Check Valves are the right choice when using Victaulic® CouplingsMore
Full Port Wafer
Our Full Port, Low Pressure Drop Wafer Check Valves fit between flanges and are easy to install.More
Full Port Deep Well
Full Port Deep Well Check Valves can support the weight of 1000' of pipe and a deep well pump.More
ANSI Dual Plate Wafer
API/ANSI Valves fully conform to API 594 Design and are tested to API 598 SpecificationsMore
Full Port Medical Gas
Our Medical Check Valves conform to NFPA 99–2018, providing In-Line Serviceability, No Threaded Connections, Dual Gage Ports, Oxygen CleanedMore
Silent Check valves are the choice for high pressure water systems where water hammer absolutely must be avoidedMore