Outlet Check Valve Back Catalog number: 11-4063 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-6809 Mobile Phase Transfer Line, TFE, 3/16" OD x 1/8" I Price on request 11-2569 Seal Extension Tube Price on request CTS-10493 Check Valve Cartridge, 2/pk Price on request