Check Valve Cartridge, Ceramic, 2/pk Back Catalog number: CTS-21463 Availability: In the manufacturer's stock Price on request - + Recommended 11-1239 Ferrule, 1/16", SS, 10/pk Price on request CTS-21095 Seal Wash (0.0787 ID, Fixed, Bio), 2/pk Price on request CTS-A11095 Check Valve, Double Ball & Seat Price on request