Operation
The TV/HAT-RA-LP is installed on the cooling water outlet of the equipment as an after flow controller. At start-up, the valve is closed except for the “control leakage”, allowing a small amount of flow to sense the changing equipment temperature. As the outlet water temperature increases to within the operating range of the TV/HAT-RA-LP, the thermal actuator modulates the valve open. If the cooling water temperature is above the acceptable range, the valve will continue to modulate open allowing additional cooling flow. As the outlet water temperature falls, the valve then modulates toward the closed position, reducing flow. This modulating action maintains a relatively constant outlet water temperature.
Benefits
Unaffected by pressure variations
Wide choice of set points
Operates in any position
Leak port (LP) senses changing upstream temperature
Design Features
Compact, low mass for fast response
Corrosion resistant – Long service life
Stainless steel body, fittings, spring and plug
Ram-type plug for tight reliable shutoff
Operates in narrow temperature band
Easy to install
Typical Applications
TV/HAT-RA-LP valves are ideal for controlling cooling water for compressors, engines, heat exchangers, welding equipment, electrical equipment, and molding equipment.
Operation
The TV/HAT-RA-LP is installed on the cooling water outlet of the equipment as an after flow controller. At start-up, the valve is closed except for the “control leakage”, allowing a small amount of flow to sense the changing equipment temperature. As the outlet water temperature increases to within the operating range of the TV/HAT-RA-LP, the thermal actuator modulates the valve open. If the cooling water temperature is above the acceptable range, the valve will continue to modulate open allowing additional cooling flow. As the outlet water temperature falls, the valve then modulates toward the closed position, reducing flow. This modulating action maintains a relatively constant outlet water temperature.
Benefits
- Unaffected by pressure variations
- Wide choice of set points
- Operates in any position
- Leak port (LP) senses changing upstream temperature
Design Features
- Compact, low mass for fast response
- Corrosion resistant – Long service life
- Stainless steel body, fittings, spring and plug
- Ram-type plug for tight reliable shutoff
- Operates in narrow temperature band
- Easy to install
Typical Applications
TV/HAT-RA-LP valves are ideal for controlling cooling water for compressors, engines, heat exchangers, welding equipment, electrical equipment, and molding equipment.
