Check Valve Cartridge, Ceramic, 2/pk Back Catalog number: CTS-21463 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21422 Needle Seal Kit Price on request CTS-21421 PM Kit, 1290 Binary Pump Price on request PS7075350 MarvelXACT™ PEEKsil™ 75µm ID x 350mm Price on request