Check Valve, Secondary Inlet Back Catalog number: 11-1600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11121-02 Wash Seal, 2/pk Price on request CTS-11149 Needle Seal O-Ring, 002 Kalrez Price on request CTS-0620 Outlet Check Valve Cartridge Price on request