Outlet Check Valve Assembly Back Catalog number: CTS-0721 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10985 600/610 Performance Maintenance Kit Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request CTS-10476 Sapphire Plunger, Alliance Price on request