Cartridge Check Valve Housing, 2/pk Back Catalog number: CTS-A11431-02 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21012 Compression Screws & Ferrules, 1/16", SS, 5/pk Price on request 11-4134 Rotor Seal & Pod Repair Kit, Vespel, 3-Groove for Price on request CTS-10319 Sapphire Plunger Price on request