Outlet Check Valve Back Catalog number: 11-4063 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-11149 Needle Seal O-Ring, 002 Kalrez Price on request CTS-21463 Check Valve Cartridge, Ceramic, 2/pk Price on request 11-3889 Needle Seat Assembly, 0.12mm ID Price on request