Check Valve Cartridge, 2/pk Back Catalog number: CTS-10600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-1010T O-Ring, TFE Price on request CTS-21406 Peristaltic Pump Cartridge, WPS/AC Price on request 11-1599 Check Valve Assembly, Outlet Price on request