Outlet Check Valve Back Catalog number: CTS-A121 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10987 717 Performance Maintenance Kit Price on request CTS-10391 Plunger Wash Seal Price on request CTS-21012 Compression Screws & Ferrules, 1/16", SS, 5/pk Price on request