huge air compressor...

Something wrong with the port you're plugging it into?

Thread the gauge into the drain valve... then open the valve and see what it says.

There's usually a port on the side where your tools/hose would attach. Worst case, you can pull one of those big plugs in the front (depressurize the tank first!) and adapt it down to 3/4" or 1/2" NPT. You'll need that anyway.
 
tested bottom of tank with same gauge, within 3 or so minutes it was at 140 psi. put gauge back on side, 20psi. swapped out gauge, same story. tried gauge directly mounted to tank, no filter, same story. it seems as its clogged, but if it was it wouldnt read correctly on the bottom either.
 
it has 2 ports on the front, i had a 21" adjustable, with 6 foot of pipe, and 2 full grown men jumping on it, didnt budge, so i think thats out of the question. i tried just plumbing in a quick disconnect to the side mount with the gauge on the drain valve, same story. gauge reads around 140, and tool barely operates.
 
You've got to figure out what's plugging that port up.
 
unless its that invisible dirt ive heard alot about, there is nothing. ive tried 3 quick disconnects, 3 gauges, and 2 filters. its possible, but i dont see it likely all 8 of those items getting plugged.
 
rightwinged said:
it has 2 ports on the front, i had a 21" adjustable, with 6 foot of pipe, and 2 full grown men jumping on it, didnt budge, so i think thats out of the question. i tried just plumbing in a quick disconnect to the side mount with the gauge on the drain valve, same story. gauge reads around 140, and tool barely operates.
Click to expand...

you say the gauge reads 140.. will the tool run from where you have the gauge attached? it ought to.. if it does, then you know what your problem is. 140psi and 60-100 or so gallons should be enough to run any tools for a good bit.. problem with feeding off the bottom to run a tool is it will fill it up right quick with water (and rust)
 
yea, the tool runs how it should off the bottom, but i dont think it matters how many filters and driers i had, running it off the bottom would be a bad idea. itll go up to like 175psi, i turned it off after that cause the tank is only built to handle 200psi. pretty sure the regulator doesnt work either, but thats another problem.
 
i went and returned that filter for another one, exact same story...itll take about 15 minutes for the gauge to read 20psi. would it have anything to do with line size? i.e. its got a 3/4 port and there is a 3/4 to 1/2 then 1/2 to 3/8 then 3/8 to 1/4 into filter. is 1/4 too small for this sized application? i dont think it would matter but ive never plumbed something this big.
 
Pipe size does not affect pressure, whether you're talking gasses or liquids.

It does reduce the volume that can pass. 3/8" NPT is enough for most air stuff, but you might decide to go with 1/2" NPT for, say, a main trunk line through the shop.

If you threaded a quick disconnect into an orifice and only got 20 psi... and you've eliminated the disconnect as being the source of the restriction, then you've got to move upstream to the next likely culprit. There's a restriction in the orifice itself.
 
Back
Top