Outlet Check Valve Back Catalog number: CTS-A157 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A117 Inlet Check Valve Price on request CTS-21075 Tube Assy, BSM Outlet to SM Price on request CTS-21095 Seal Wash (0.0787 ID, Fixed, Bio), 2/pk Price on request