PTFE Diaphragm, LC-30AD/i-Series, 2/pk Back Catalog number: 11-4122 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended 11-1599 Check Valve Assembly, Outlet Price on request CTS-10323 Sapphire Plunger Price on request CTS-11010 515 Performance Maintenance Kit Price on request