Anti-freezing for solenoid valves in winter
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The operating temperature is around minus ten degrees, and there is a small amount of moisture in the compressed air; solenoid valves often fail to function properly in winter. How can this be resolved? Is it feasible to use heat-shrink tubing? How about installing a homemade electric heater on the side of the pneumatic control box?
With just one valve, it’s easy to solve the problem; the issue lies in the fact that every system and every factory is equipped with a bunch of control valves, isn’t that right? This should be resolved by using instrument air. HG/T 20510-2000 Specifications for the Design of Instrument Air Supply; SH/T 3020-2013 Code for the Design of Instrument Air Supply in Petrochemical Industries