Inlet Check Valve Back Catalog number: CTS-A117 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A094 Check Valve Cartridge, 2/pk Price on request CTS-10759 Piston Seal Backup Ring Price on request 11-3601 ACQUITY H SM-FTN Performance Main. Kit,700005236 n Price on request