Air compressor draining
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    Air compressor draining

    I got a Dewalt d55168 a/c. I just read where you are to drain the water that accumulates each use, daily, etc. I have never drained mine. I just opened the valve for the first time in 6 years and nothing came out. I only use it maybe once every couple weeks and for a short period, toping off tire pressure etc. Is the water drying up between uses or do I need to replace the drain plug. thanks

    Charlie
    John Deere 5310

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    OxPath's Avatar
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    Did any air come out of the drain valve? If you drained air and no water you're good. If no air came out, then your drain valve is plugged.

    They sell replacement valves at Lowe's and Home Depot. Be sure to release the pressure on the tank before changing the drain valve if needed, as it will come out of the hole with enough force to seriously injure you if under pressure.
    Last edited by OxPath; 03-20-2018 at 08:00 PM. Reason: Corrected plug to valve.
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    if it has a plug you might want to replace it with a valve. They are usually quarter inch NPT
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    Mike

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    Quote Originally Posted by OxPath View Post
    Did any air come out of the drain plug? If you drained air and no water you're good. If no air came out, then your drain plug is plugged.

    They sell replacement plugs at Lowe's and Home Depot. Be sure to release the pressure on the tank before changing the drain plug if needed, as it will come out of the hole with enough force to seriously injure you if under pressure.
    I hate those cheap knurled or winged valves that come on most compressors. Even if it works, I recommend replacing it with a ball valve (much better handle!), possibly one with an extension so it's not so hard to reach. The easier it is, the more often you'll use it. (I usually drain my compressor with 3-4 psi on the gauge to help push the water out.)
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    OxPath's Avatar
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    Quote Originally Posted by MDrew View Post
    if it has a plug you might want to replace it with a valve. They are usually quarter inch NPT
    Bad on me. The OP specified valve and I wrote plug. His Dewalt compressor looks like it came with a ball valve.
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    MDrew's Avatar
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    Quote Originally Posted by OxPath View Post
    Bad on me. The OP specified valve and I wrote plug. His Dewalt compressor looks like it came with a ball valve.
    Yeah well I could have read that too. What are you some kind of trained observer?
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    OxPath's Avatar
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    Quote Originally Posted by MDrew View Post
    Yeah well I could have read that too. What are you some kind of trained observer?
    Apparently our training has gone to waste.
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    I don't have much of a problem during the winter because the compressor is in a heated garage with little temp fluctuation but during the summer with the humidity, absolutely. That reminds me, I haven't checked it for a while.
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    I do mine monthly in summer. I can’t in winter the drain freezes over, but I rarely run it either. I flipped it on once this winter for 5 minutes of wire brushing, it will hold enough pressure for tires until it warms up.
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    No air coming out, so picked up one at Home depot. I splurged an got the $4.47 one.

    thanks

    Charlie
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