Check Valve Assembly, Outlet Back Catalog number: 11-1599 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10547 Pump Seal, Gold Price on request CTS-21011 Cartridge Check Valve System Kit Price on request 11-4179 HPV Rotor, SIL-30AC, SIL-30ACMP Price on request