Check Valve Cartridge, 2/pk Back Catalog number: CTS-10600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10323 Sapphire Plunger Price on request CTS-21015 Ferrule, 1/16", SS, 3/pk Price on request 11-1599 Check Valve Assembly, Outlet Price on request