Outlet Check Valve Back Catalog number: 11-4063 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended 11-4181 Seal Wash (0.0787 ID, Fixed), 2/pk Price on request 11-2401 Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Price on request 11-2570 Needle Seat Price on request