![]() I don't think air loss like I have can be considered normal, at my job they just bought a 80 gallon vertical compressor from Lowes and every night before we leave they shut the power off going to it and I've noticed the next day the pressure is always high. When that doesn't happenmaybe the tank won't hold air, the pressure gauge isn't working or the safety valve keeps popping openSears PartsDirect has the troubleshooting guidance to get your air compressor back in good working condition. These air compressors are easily available and comparatively more budget-friendly. It is appropriate for applications varying in pressure range from 70psi to 100psi. I agree the drain valve design is a bad one, almost impossible to get at the way they designed it, I'll have to do as you did as soon as I figure out where this tank is losing air from. An air compressor is a handy DIY tool when it's working correctly. These piston air compressors can be sub-divided into two types: Single-Stage Air Compressors: This type of air compressor uses one side of the piston to compress air. Right now I can't re-install the pressure switch as earlier I was tightening a fitting and cracked the aluminum so I need to get a new pressure switch, actually I needed a new one anyway as the plastic on/off knob broke on it. I know that just because there is a check valve doesn't mean it can't leak back, I have a check valve on the output of a air compressor I have in my car for my air horn and one day it got stuck slightly ope, I had to take it apart and clean it than it was ok again. I just went out and checked the pressure and it is holding (so far) at about 114 PSI, I'll wait until tomorrow and check it again, if there is a large drop I will pull the copper line from the pump and check it for a leak coming thru the check valve. Another thing was looking up info on compressors and on the CHpower site they show a breather where the oil fill is, mine did not come with a breather just a screw in plug, how important is it to have that breather installed? Compressor works fine other than the leak. ![]() Any ideas where else to check? Line going from pump to tank has not been touched and should have the check valve installed as it is the same way it was when I bought it. After approx 2 hours pressure has dropped to 114, (will update pressure in a few hours), I sprayed all the fittings, welds and pump with soapy water again and still do not see any signs of a leak. First couple of minutes pressure dropped about 5 PSI. To eliminate the fittings being a source of the leak I took the pressure switch out of the tank and installed a air gauge in it's place, I than filled the compressor to 125PSI and unplugged the motor. I let the compressor fill to it's shutoff pressure and sprayed all the fittings and welds with soapy water but do not see anywhere that is leaking. Problem is the tank will leak out all it's air overnight, compressor is in my shed and I live in Florida. I have a Husky air compressor, about 1 year old, 30 gallon vertical tank, with the separate motor & pump.
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