Check Valve Cartridge, 2/pk Back Catalog number: CTS-A094 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21010 Cartridge Check Valve Housing, 2/pk Price on request 11-2891 PTFE Diaphragm, 2/pk Price on request CTS-A11151 Needle Assembly, PEEK™ Price on request