TFE 3-Way Valve 4 (V4) Back Catalog number: CTS-10285 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21010 Cartridge Check Valve Housing, 2/pk Price on request CTS-A11142 Tube Assy, Inject Outlet Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request