Check Valve Cartridge, 2/pk Back Catalog number: CTS-10493 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-5746 Reference Valve Rebuild Kit Price on request PS7025350 MarvelXACT™ PEEKsil™ 25µm ID x 350mm Price on request CTS-10396 Washer Thermo/Dionex™ Model: P1000, P2000, P4000 Price on request