Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Back Catalog number: 11-2401 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended PL7100350 MarvelXACT PLS 100µm x 350mm Price on request CTS-5746 Reference Valve Rebuild Kit Price on request CTS-10963 Gold Plunger Seal Price on request