Check Valve Cartridge, 2/pk Back Catalog number: CTS-10600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11434 Sapphire Plunger Price on request 11-1597 Piston Assembly, TZP Price on request PL7050600 MarvelXACT PLS 50µm x 600mm Price on request