PTFE Diaphragm, 2/pk Back Catalog number: 11-2891 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11313 PEEK™ Rotor, LPV Price on request CTS-10493 Check Valve Cartridge, 2/pk Price on request CTS-A145 Inlet Check Valve Price on request