There is white, condensed water-like substance inside the electric valve actuator
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This problem of five electric valve actuators failing sequentially has occurred; the pump rooms are very dry, and each one is well-ventilated. However, there is white crystalline deposit inside the actuators. I hope experts can help figure out what could be causing this
Personally, I think it might be compressed air with poor dehydration that has seeped into the junction box, causing water vapor to condense due to the low temperature. Check the wire conduit to see if there are any connections to compressed air or instrument air.
It is caused by the condensation of water vapor in the air; apply a little silicone sealant to the seals around the junction box and gland.
Use Exd-type flanges and seal with explosion-proof putty.
There is air and condensed water at the connections of the explosion-proof hose.
Check the junction box on the actuator, as well as ensure that the power inlet points, explosion-proof flexible connectors, and wire conduits are sealed, and that no moisture has entered the wire conduits
Is the valve opened and closed frequently? Disassemble the coupling to check if the packing is leaking.
First, seal the actuator and wiring connections, and address each issue based on the actual conditions of the pump room.
There are areas with poor sealing; be sure it’s not caused by the equipment itself, and check them one by one.