Outlet Check Valve Back Catalog number: CTS-A11187 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-3834 Pump Seal, PE Price on request 11-2529 Screw, Comp., 10-32, 304SS, (Gold-Plated), 10/pk Price on request CTS-12013 Tungsten Lamp (1000 hr) Price on request