Check Valve Cartridge, 2/pk Back Catalog number: CTS-A094 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10396 Washer Thermo/Dionex™ Model: P1000, P2000, P4000 Price on request CTS-0620 Outlet Check Valve Cartridge Price on request CTS-21169 Assy, Capillary, 90mm x 0.17mm ID, w/Fittings Price on request