Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Back Catalog number: 11-2401 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-2570 Needle Seat Price on request CTS-11435 Seal, Needle PEEK™ Price on request CTS-12016 Compression Screw, 1/16", SS, 10/pk Price on request