Outlet Check Valve Back Catalog number: CTS-A157 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21567 PM Kit, Seal Wash for Binary Pump G4240A Price on request 11-4121 Ceramic Plunger Holder Assembly, LC-10ADvp Price on request CTS-10328 Optics Cover Window Price on request