TFE 3-Way Valve 4 (V4) Back Catalog number: CTS-10285 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request CTS-21463 Check Valve Cartridge, Ceramic, 2/pk Price on request CTS-11121-02 Wash Seal, 2/pk Price on request