Install an Controller with automatic Digital control of drainage time - will save you money.
Check for Compressor Conroller
SOURCE: Drain valve on air compressor won't open or close
I would use an ajustable wrenck to try and open the valve. Being at the bottom and in the water, this is a common occurrence. to replace the valve, there is a Hex nut outer fitting (part of the valve) that you have to remove right by the valve "T" handle. Put a wrench on this and remove the complete valve. It too will be very hard to remove. When you install the new valve, use some anti-seize compound to make future removal easier.
SOURCE: Drain valve in Porter Cable air compressor
this valve works backwards, you screw it out to stop airflow. If that doesn't work, replace the valve.
David
SOURCE: Porter cable pancake unit blows air after shut off.
tap on the check valve with a metal object. Its sticking open. The check valve is the brass fitting on top of the tank. When the valve sticks open it emits air from the area of the engine. If that doesn't work (which I would be surprised it doesn't), you'll need to purchase a new check valve. Good Luck!
SOURCE: The drain plug on my Porter Cable pancake
Yes...the drain valve on the bottom of the tank is just a standard 1/4 Drain Pedcock that you can purchase at most hardware store.
You can also find these in the hardware section of Lowes or Home Depot where they sell the Air Compressors.
SOURCE: Extra fitting on my Porter Cable?
The porter cable compressor is equipped with a pressure relief valve. Mine has a ring attached to it. When you pull out on the valve, it releases all the pressure stored in the tank. Try pushing that valve back in, or if faulty replace it.
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The drain valve leaks and won't reseal. How do I remove it and put in a new valve?
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