NCLX T & P Relief Valve- Cash Acme NCLX Combination Temperature and Pressure Relief Valves are designed for the protection of hot water heaters and storage tanks.- Cash Acme NCLX Valves are designed to meet all applicable standards and are ideal for all domestic water heater applications.- Complete with temperature sensing element.- Listed by CSA and ASME: Inspector friendly, peace of mind!F-30 and F-82 Safety Relief Valves- The Cash Acme F-30 and F-82 Relief Valves are compact and economical pressure only for water supply heaters and storage tanks.- The Cash Acme F-30 and F-82 Relief Valves are designed for use on hot water service only and not to be used on steam.- Listed by ASME: Inspector friendly, pease of mind!