The insert style check valves feature an integral locking end that provides secure retention and prevents bypass leakage, making installation simple without the need for threads, sealants, or O-rings.
Standard versions are available in 5.5 mm and 8.0 mm diameters with both forward and reverse configurations. They can also be purchased with an integral safety screen to mitigate contamination or a ceramic ball design for aggressive environments. Additionally, our side exit variations offer unparalleled design flexibility.
This threadless, cartridge-style, one-way valve offers higher flow capacity over our standard 558 Series valve. This valve features The Lee Company’s field-proven locking end that provides secure retention into metal manifolds without the need for threads, O-rings, or sealants. The valve features all stainless steel construction with a high quality metal seat providing low leakage, repeatable cracking pressure, and long life. The valve is 100% functionally tested to ensure performance.