Check Valve Cartridge, Ceramic, 2/pk Back Catalog number: CTS-21463 Availability: In the manufacturer's stock Price on request - + Recommended CTS-11313 PEEK™ Rotor, LPV Price on request CTS-21526 Jig, Diaphragm Price on request CTS-11380 2690/2695 Performance Maintenance Kit w/Seal Pack Price on request