Outlet Check Valve Cartridge Back Catalog number: CTS-0620 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10285 TFE 3-Way Valve 4 (V4) Price on request CTS-10987 717 Performance Maintenance Kit Price on request 11-3321 Wash Seal Gasket, 6/pk Price on request