Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Back Catalog number: 11-2401 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-2369 Sapphire Plunger Price on request 11-2570 Needle Seat Price on request PL7075350 MarvelXACT PLS 75µm x 350mm Price on request