Check Valve Cartridge, Ceramic, 2/pk Back Catalog number: CTS-21463 Availability: In the manufacturer's stock Price on request - + Recommended CTS-10757 High Pressure Seal Kit Price on request CTS-A11151 Needle Assembly, PEEK™ Price on request 11-4052 Needle Seal, SIL-30AC, SIL-30ACMP Price on request