Outlet Check Valve Cartridge Back Catalog number: CTS-0620 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-3321 Wash Seal Gasket, 6/pk Price on request 11-1239 Ferrule, 1/16", SS, 10/pk Price on request 11-3897 Plunger Holder Price on request