CHECK VALVES THAT guarantee PERFORMANCE.
Explore why The Lee Company's check valves are the smallest and most reliable in the market. From deep underground to outer space, our valves stand unmatched in versatility and dependability.
ROBUST MINIATURE CHECK VALVES BUILT TO EXCEL IN DEMANDING ENVIRONMENTS AND APPLICATIONS
Unmatched reliability, high flow capacity, and versatile configurations ensure optimal performance and longevity for diverse fluid control applications.

BALL-STYLE CHECK VALVES
Ball style check valves offer an economical solution for fluid flow control. These valves utilize a ball bearing as the sealing element, enabling axial flow with reliable performance. Available in various configurations, these compact valves are easy to install and maintain, making them ideal for systems where space efficiency and dependability are crucial.

SIDE EXIT CHECK VALVES
Side exit check valves are ideal for manifolds needing directional flow changes. The porting allows the ball to move out of the flow path, increasing flow capacity and enhancing silt resistance. These valves come in various configurations to suit high demand systems with flow rates up to 10 GPM, and economical options for flow rates of 0.5 GPM and 2.2 GPM.

HIGH FLOW CHECK VALVES
Our poppet style check valves offer exceptionally high flow capacity, up to 3.5 times more than the same diameter ball style valves. Available in 0.125 to 1 inch sizes, they ensure optimal flow and stability. A NACE compliant version made of MP35N is available for systems with pressures up to 15,000 psid.

ZERO LEAK CHECK VALVES
Lee Zero Leak check valves feature an elastomeric seal material to suit applications where eliminating leakage is critical. They utilize a poppet style axial flow design with a choice of two different elastomers and are available in a comprehensive range of sizes.

EXTREME ENVIRONMENT CHECK VALVES
If you need a check valve that can withstand working pressures up to 15,000 psi and temperatures up to 400°F, The Lee Company offers a solution to fit your needs. These valves are made of corrosion resistant stainless steel and are available with multiple polymeric valve seat material options to achieve zero leakage in the checked direction under extreme temperatures.

PILOT-OPERATED CHECK VALVES
Lee Pilot Operated check valves are available in diameters from 0.250 to 0.500 of an inch. The base poppet style valve is designed for 3000 psi systems, while high pressure models handle up to 5000 psi and offer forward and reverse flow configurations. Custom configurations with zero leak seals are available upon request.
Get the comprehensive guide to selecting the right check valve.
Created by engineers, for engineers.
In this eBook, you’ll learn:
- What a check valve is and how it works
- Check valve functions and configurations
- The critical performance characteristics of a check valve
- The environmental factors that impact the design of a check valve
- Check valve performance trade offs and design challenges
- Potential failure modes of a check valve

Explore Our Full Range of Check Valves
Discover the precision and reliability your applications demand.