Inlet Check Valve Back Catalog number: CTS-A145 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-2525 1/4" Short Comp. Screw (Gold-Plated), 10/pk Price on request CTS-A121 Outlet Check Valve Price on request 11-4122 PTFE Diaphragm, LC-30AD/i-Series, 2/pk Price on request