Check Valve Cartridge, Ceramic, 2/pk Back Catalog number: CTS-21463 Availability: In the manufacturer's stock Price on request - + Recommended 11-3601 ACQUITY H SM-FTN Performance Main. Kit,700005236 n Price on request CTS-11434 Sapphire Plunger Price on request CTS-A11342 Tube Assembly, Transducer to Check Valve Price on request