Shut-off valve HST
for waterfor oilfor air

Shut-off valve - HST  - Thermomegatech - for water / for oil / for air
Shut-off valve - HST  - Thermomegatech - for water / for oil / for air
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Characteristics

Function
shut-off
Media
for water, for oil, for air, for steam
Body
stainless steel
Number of channels
2-channel
Other characteristics
corrosion-resistant, high-temperature, thermal
DN

0.5 in

Pressure

207 bar
(3,002.3 psi)

Temperature

149 °C
(300 °F)

Description

ThermOmegaTech’s High Sample Temperature (HST) Safety Thermal Shutoff Valve protects expensive and delicate sample analyzers from overtemperature damage. With a high varied range of materials, this high temperature shut off valve can handle several different media types. Operation The HST (High Sample Temperature) automatic thermal shutoff valve is used to sense the sample temperature after the sample cooler. Under normal conditions, the valve is wide open so the sample fluid passes through the valve. The valve’s internal thermal actuator is always sensing the fluid temperature and if the temperature exceeds the valve’s set point, the HST will close to protect expensive and delicate analyzers and other instruments downstream from over-temperature damage. The HST will only open again once the sample temperature falls back below the valve’s set-point. Low coolant flow, total loss of cooling water, or unusually high sample temperatures are typical reasons why the HST self-operating protective device should be considered for your high-water temperature shut-off system. Typical Applications Excessively hot samples can cause damage to expensive and sensitive hardware and electronics. For process analyzers and similar instrumentation, it is important to assure that the process sample fluids are always below the maximum allowable temperature for such instruments. Sample coolers are commonly used to reduce sample temperatures to acceptable limits. In the event of a loss of cooling fluid to the sample cooler, or if the desired sample temperature is exceeded for any reason, the HST thermal shutoff valve will close to prevent equipment damage.

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