Inlet Check Valve Cartridge Back Catalog number: CTS-0621 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21240 ACQUITY I-Class SM-FTN Performance Maint. Kit,2890 Price on request CTS-21262 Needle, Uncoated 20 Series Price on request CTS-A11133 Tube Assembly, Transducer to Check Valve Price on request