Inlet Check Valve Back Catalog number: 11-4060 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended 11-1597 Piston Assembly, TZP Price on request 11-2401 Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Price on request CTS-10600 Check Valve Cartridge, 2/pk Price on request