After selecting the parameters of a high-temperature solenoid valve, installation and maintenance are crucial. Different temperature ratings correspond to different sealing accessories and sealing gaps. Commonly used high-temperature media include steam, heat transfer oil, high-pressure hot water, and various high-temperature gases. Even two identical high-temperature steam solenoid valves may have different installation locations, requiring different maintenance methods, and the installation location may vary depending on the environment.

First, before installing the high-temperature solenoid valve, carefully check the product label parameters against the actual operating conditions to ensure the installed solenoid valve fully meets the usage requirements. It is recommended that users assign a dedicated person to be responsible for its use and maintenance.

Second, this step is very critical and easily overlooked. Solenoid valves are precision components. Before installation, the pipeline and flow equipment must be thoroughly cleaned to completely remove impurities such as metal welding slag, residual raw material tape, and rust. For media that may contain impurities, a filter should be installed before the valve, preferably with a mesh size of at least 100.

Third, during installation, prevent steam condensate and impurities from accumulating in the high-temperature solenoid valve. Avoid installing the valve at the lowest point of the pipeline to prevent affecting its operation.

Fourth, to ensure the normal operation of the solenoid valve, it needs to undergo 5-10 trial runs with the medium after installation before it can be used formally.

Fifth, during operation, pay attention to the working pressure before and after the valve. The maximum working pressure must not exceed the nominal pressure. When a minimum working pressure difference is required, the pipeline working pressure difference must be greater than the minimum pressure difference to prevent solenoid valve failure. When the working pressure exceeds the nominal pressure or the maximum working pressure, the system should be shut down, the working pressure reduced, or the high-pressure solenoid valve replaced.

Sixth, during routine maintenance, the dirt inside the valve should be cleaned regularly. For example, between the mating surfaces of the cap and the valve plug, and the contact surfaces of the stationary and moving iron cores; be careful not to damage the sealing surfaces.

Seventh, when the medium for the high-temperature solenoid valve is heat transfer oil, when removing it from the pipeline, clean the internal parts of the valve with carbon tetrachloride (CCL4) and clean the storage area with compressed air. During disassembly and cleaning, all parts should be placed in order and then restored to their original state.

Eighth, before each operation of the high-temperature steam solenoid valve, the steam condensate and gas should be removed, and then tested for 5-10 minutes. It can only be put into use after normal operation. When the solenoid valve is not used for extended periods, the manual valves before and after it should be closed.

A good high-temperature solenoid valve is not necessarily one made with the best materials, nor is it simply one that can withstand extremely high temperatures. High-temperature solenoid valve manufacturers first select valves suitable for high-temperature operating conditions, and then choose appropriate internal components based on the characteristics of the medium, such as its corrosiveness. Different temperature ratings require vastly different machining clearances. A clearance that is too large, while providing flexible switching, results in poor sealing performance; a clearance that is too small, while providing good sealing performance, results in insufficient sensitivity. Familiarity with the above eight key points for the installation and maintenance of high-temperature solenoid valves is essential.