Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Back Catalog number: 11-2401 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A11431-02 Cartridge Check Valve Housing, 2/pk Price on request CTS-21243 1/16'' Ferrule set, 2/pk Price on request CTS-0038 Tube, Right Inlet Pigtail Price on request