Check Valve Assembly, Outlet Back Catalog number: 11-1599 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-9600 Inlet Manifold Kit Price on request CTS-12016 Compression Screw, 1/16", SS, 10/pk Price on request CTS-21163 Rotor Seal, 2-Groove Price on request