Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Back Catalog number: 11-2401 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-6958 Indicator Rod Kit Price on request CTS-11294 1515 Performance Maintenance Kit Price on request 11-3889 Needle Seat Assembly, 0.12mm ID Price on request