Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Back Catalog number: 11-2401 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-2891 PTFE Diaphragm, 2/pk Price on request PS7075350 MarvelXACT™ PEEKsil™ 75µm ID x 350mm Price on request CTS-0621 Inlet Check Valve Cartridge Price on request