Check Valve, Cartridge Back Catalog number: CTS-21480 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21278 Rotor seal, Injector Valve 1300 bar, G7167B Price on request CTS-3209 Syringe Seal, 250μL/2500μL Price on request CTS-10600 Check Valve Cartridge, 2/pk Price on request