The HAT/RA (Heat Actuated Trap/Reverse Acting) and TV/HAT-RA (Tube Valve Heat Actuated Trap/Reverse Acting)  valves may be used to regulate the flow of cooling water, glycol, or other cooling media in applications requiring economical removal of heat from equipment or a process. The valves regulate cooling water flow as needed thereby minimizing consumption and waste. Since the HAT/RA and TV/HAT-RA valves open on rising temperatures, they may be used in many thermal relief valve applications.

HAT/RA-LP and TV/HAT-RA-LP valves have leak ports for increased sensitivity of upstream temperatures. These valves are ideal for controlling cooling water for compressors and die-casting equipment, engines, heat exchangers, welding equipment, electrical equipment, and molding equipment.

All these valves continually sense fluid temperature and automatically modulate to maintain the optimum operating temperature which improves efficiency, reduces wear and conserves energy.