Outlet Check Valve Back Catalog number: 11-4063 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended 11-2529 Screw, Comp., 10-32, 304SS, (Gold-Plated), 10/pk Price on request 11-3883 Needle Assembly Price on request 11-2401 Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Price on request