Outlet Check Valve Back Catalog number: CTS-A157 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-1239 Ferrule, 1/16", SS, 10/pk Price on request 11-4181 Seal Wash (0.0787 ID, Fixed), 2/pk Price on request CTS-11335 ACQUITY H-Class QSM Performance Maintenance Kit Price on request