Check Valve Assembly, Outlet Back Catalog number: 11-1599 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10686 Needle Seal, Vespel® Price on request CTS-A11431-02 Cartridge Check Valve Housing, 2/pk Price on request CTS-10475 Sapphire Plunger Kit Price on request