Check Valve, Cartridge Back Catalog number: CTS-21480 Availability: In the manufacturer's stock Price on request - + Recommended CTS-A11135 50μL Std. Zirconia Mixer Price on request CTS-21015 Ferrule, 1/16", SS, 3/pk Price on request CTS-10566 Alliance Head Plunger Seal Kit, 2/pk Price on request