Inlet Check Valve Back Catalog number: CTS-A145 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A157 Outlet Check Valve Price on request CTS-10396 Washer Thermo/Dionex™ Model: P1000, P2000, P4000 Price on request 11-2401 Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Price on request