Check Valve Cartridge, 2/pk Back Catalog number: CTS-10600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11371 ACQUITY I2V BSM Performance Maintenance Kit Price on request CTS-A11336 Cartridge, Intelligent Valve Price on request CTS-21243 1/16'' Ferrule set, 2/pk Price on request