How often do you drain your air compressor?

We installed a automatic drain system operated by the pressure release for the head when it shuts off. When ever the compressor kicks off the tank spits out the water. This is one make . There are several you can find much cheaper. They also make them for your water trap.

Does it by itself automatically , No electric, Never worry about water again

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Conrader Auto Drain Valve, 1/4 In. NPT, 500 psi WV-1-KIT | Zoro