Check Valve Assembly, Outlet Back Catalog number: 11-1599 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11141 ACQUITY SM Performance Maintenance Kit, 700005236 Price on request 11-4063 Outlet Check Valve Price on request 11-4134 Rotor Seal & Pod Repair Kit, Vespel, 3-Groove for Price on request