Check Valve Cartridge, Ceramic, 2/pk Back Catalog number: CTS-21463 Availability: In the manufacturer's stock Price on request - + Recommended CTS-10761 HPMV 1 & 2 Rebuild Kit w/Spool Price on request CTS-A11376 Mixer Assembly, 100μL Price on request CTS-10285 TFE 3-Way Valve 4 (V4) Price on request