1-General Standard Name
Steam-water sampling protection solenoid valve, online instrument over-pressure cut-off valve.
2-Structural Features
Connection: Welded nozzle suitable for instrument seamless steel pipe butt welding.
Driving: Solenoid coil driven, fast response for automatic on-off via electric signal.
Material: 304/316 stainless steel forging, PN25 pressure class, suitable for high temperature high pressure steam-water.
Function: Automatic shut-off under abnormal over-pressure to protect rear conductivity meter, pH meter, dissolved oxygen meter and other precision instruments.
3-Application
1.Electric Power & Energy Industry (Core Application)
Standard valve used in steam-water sampling systems, high-temperature/high-pressure sampling panels, and low-temperature instrument panels in thermal power plants, CHP plants, and nuclear power plants.
Installed at the front end of online analytical instruments as the final safety barrier for the instruments. In the event of pressure fluctuation or overpressure, it automatically shuts off the sample water to protect expensive analytical instruments from damage.
Used for safety control in steam-water sampling circuits of boilers, steam turbines, and other thermal systems.
2.Petrochemical Industry
Used in online process medium sampling systems in refineries and natural gas processing plants to protect precision analytical instruments from damage caused by high-pressure and impact media.
Provides safety shut-off and protection for corrosive media and high-pressure gas sampling pipelines.
3.Instrumentation & Automation Industry
Supporting protection valve for online water quality/gas analysis systems, enabling automatic safety control of instrument circuits.
Provides gas/liquid circuit protection for laboratory precision analytical instruments, preventing irreversible equipment damage caused by sudden pressure fluctuations.
4.Metallurgy & New Energy Industry
Used for instrument safety protection in steam-water sampling systems of metallurgical waste heat power generation and captive power plants, as well as process fluid analysis circuits in photovoltaic and lithium battery industries.
