Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Back Catalog number: 11-2401 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-0621 Inlet Check Valve Cartridge Price on request 228-35146-00ASP Plunger Seal for Shimadzu Price on request CTS-11367 Piston, Low Pressure Price on request