Cartridge, Intelligent Valve Back Catalog number: CTS-A11336 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10788-5 Needle Wash Frit, 5/pk Price on request CTS-21463 Check Valve Cartridge, Ceramic, 2/pk Price on request CTS-A11133 Tube Assembly, Transducer to Check Valve Price on request