Check Valve Cartridge, 2/pk Back Catalog number: CTS-10493 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended PL7025350 MarvelXACT PLS 25µm x 350mm Price on request CTS-21406 Peristaltic Pump Cartridge, WPS/AC Price on request 11-4126 Plunger Seal and Back Up Ring Price on request