Check Valve Cartridge, Ceramic, 2/pk Back Catalog number: CTS-21463 Availability: In the manufacturer's stock Price on request - + Recommended 11-1600 Check Valve, Secondary Inlet Price on request CTS-A11187 Outlet Check Valve Price on request PS7050350 MarvelXACT™ PEEKsil™ 50µm ID x 350mm Price on request