Check Valve Cartridge, 2/pk Back Catalog number: CTS-10600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-1601 Seal, GFP, High Pressure, Piston Price on request CTS-21183 Peristaltic Pump Price on request CTS-10476 Sapphire Plunger, Alliance Price on request