Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Back Catalog number: 11-2401 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10285 TFE 3-Way Valve 4 (V4) Price on request CTS-10761 HPMV 1 & 2 Rebuild Kit w/Spool Price on request 11-4126 Plunger Seal and Back Up Ring Price on request