Check Valve Cartridge, 2/pk Back Catalog number: CTS-A094 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21591 PM Kit, G4226A Price on request CTS-A145 Inlet Check Valve Price on request CTS-10560 Seal Wash Plunger Seal, Alliance, 2/pk Price on request