Check Valve Cartridge, 2/pk Back Catalog number: CTS-10600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A138 Ceramic Plunger Assembly Price on request 11-4122 PTFE Diaphragm, LC-30AD/i-Series, 2/pk Price on request CTS-10573 Injection Valve Rotor Seal Price on request