High Temperature Shutoff

Steam and Water Analysis System (SWAS)

Corrosion and erosion are major concerns in thermal power plants operating on steam. Sampling systems are often used to monitor the steam’s quality. These complex systems require a high-temperature shut-off system to ensure the process sample’s fluids are consistently below the maximum allowable temperature for process analyzers and similar instrumentation downstream.

Steam sampling is usually required for chemical, petrochemical, and refining processes to mitigate the risk of operational failure, corrosion, or cracking due to steam impurity. A Steam and Water Analysis System (SWAS) can help monitor the critical parameters in the steam and protect the instrumentation.

Sample coolers, pressure reducers, and thermal relief valves are used throughout the sampling system to help reduce the temperature and pressure of the steam or water to an acceptable range for the sensors. Thermal relief valves are critical as they are a fail-safe for the sample cooler to ensure no high-temperature water or steam reaches the expensive analyzer equipment. It is designed to immediately shut off sample flow when it exceeds safe temperatures.

The HST, HAT, or TV/HAT can be used as thermal shut-off valves in sampling systems to protect downstream analyzers, instruments, and personnel from over-temperature damage. The valve should be installed after the sample cooler to monitor the sample temperature as it leaves the cooler. The valve will remain open as long as sample temperatures are under the set-point of the valve. If the sample temperature increases above the set-point, the valve’s thermal actuator will cause it to close, protecting downstream analyzing equipment from damage.

The HST protects electronics in sample analyzers from over-temperature in case of a sample cooler failure. This valve is rated for 3000 PSIG (207 BAR), ideal for high-pressure applications. Media samples often include sour gas, SWAS (steam water analysis system), and fractional distillation such as refinery gas, petrol, naphtha, kerosene, diesel oil, and residue.

Airplane Galley Scald Protection

The galley faucet can produce scalding water on aircraft, putting crew and passengers in danger. This happens when a coffee maker’s boiling water backflows through a shared manifold and releases high-temperature water through the airplane faucet. ThermOmegaTech’s HAT and TV/HAT valves, installed between the manifold and faucet, are designed to sense the water continuously and automatically shut off flow if the temperature rises to unsafe levels. Once the water has cooled, the valve will re-open to re-establish flow. HAT valves are available in NPT, and TV/HAT valves have tube-fitting connection ends.

ThermOmegaTech’s economically reliable high-temperature shut-off valves are entirely mechanical and require no external source of electricity to operate, guaranteeing protection for your equipment and personnel.