Outlet Check Valve Back Catalog number: CTS-A11187 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11141 ACQUITY SM Performance Maintenance Kit, 700005236 Price on request CTS-10548 Gold Plunger Seal, Analytical Heads Price on request CTS-21015 Ferrule, 1/16", SS, 3/pk Price on request