Peristaltic Pump Back Catalog number: CTS-21183 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21463 Check Valve Cartridge, Ceramic, 2/pk Price on request CTS-A11336-02 Cartridge, Intelligent Valve, 2/pk Price on request CTS-A11133 Tube Assembly, Transducer to Check Valve Price on request