Inlet Check Valve Back Catalog number: CTS-21147 Availability: In the manufacturer's stock Price on request - + Recommended 11-4134 Rotor Seal & Pod Repair Kit, Vespel, 3-Groove for Price on request CTS-10323 Sapphire Plunger Price on request CTS-6809 Mobile Phase Transfer Line, TFE, 3/16" OD x 1/8" I Price on request