Tools, Sharpening and Power Machinery - Delta compressor mystery vale. What is it???
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tpeerson
08-30-09, 02:34 PM
A valve on my delta DLKC6580V2-1 compressor with 2-Stage Pump has started sputtering before the tank reaches maximum pressure. I cannot identify it because it is not shown in the parts diagram. Can someone please help me figure out what it is? Thank you!
http://www.seethepics.com/images/deltavalve.jpg
http://www.SeeThePics.com (http://www.seethepics.com/images/deltavalve.jpg)
http://www.seethepics.com/images/deltavalve.jpg
http://www.SeeThePics.com (http://www.seethepics.com/images/deltavalve.jpg)
nap
08-30-09, 03:32 PM
it looks like a pressure pop-off valve. It would limit the max pressure within the system so you would not damage other parts.
Depending if you are maxing out the compressor or not, it may be a bad valve or it may be doing what it is supposed to be doing.
Depending if you are maxing out the compressor or not, it may be a bad valve or it may be doing what it is supposed to be doing.
GregH
08-30-09, 09:30 PM
It does look like a pressure relief valve and is an important safety device.
You need to check that the pressure is not too high.
It is possible that if the check valve at the tank is partially plugged and the pressure switch senses tank pressure the pump could run higher pressure than it should.................or the valve is faulty.
You need to check that the pressure is not too high.
It is possible that if the check valve at the tank is partially plugged and the pressure switch senses tank pressure the pump could run higher pressure than it should.................or the valve is faulty.
tpeerson
08-30-09, 10:01 PM
Here's what's happening... When the compressor kicks in, it starts sputtering around 135 psi and stops when the compressor shuts off. At first it sputters maybe every second and by the time it shuts off it sounds like a machine gun. What's confusing to me is that it shuts off at i50 psi and not 175psi like it used to.
There is a safety valve located just before the pressure switch assembly.
There is a safety valve located just before the pressure switch assembly.
GregH
08-31-09, 05:10 AM
Ok, that valve is an Intercooler Safety Valve.
It is listed on p 29 of the manual (http://www.dewaltservicenet.com/documents/English/Instruction%20Manual/Delta/D26161-E.pdf).
The line that it is on is the where the air travels from the first to second stage.
It is there to release if the air pressure gets too high either between the two stages or before the check valve.
The causes could be a plugged or dirty check valve, a problem with the second stage head/reed valve assembly or it is defective.
I would suggest that you first disassemble the check valve at the tank to see if it is dirty and then remove the intercooler line to check it for a possible blockage.
It is listed on p 29 of the manual (http://www.dewaltservicenet.com/documents/English/Instruction%20Manual/Delta/D26161-E.pdf).
The line that it is on is the where the air travels from the first to second stage.
It is there to release if the air pressure gets too high either between the two stages or before the check valve.
The causes could be a plugged or dirty check valve, a problem with the second stage head/reed valve assembly or it is defective.
I would suggest that you first disassemble the check valve at the tank to see if it is dirty and then remove the intercooler line to check it for a possible blockage.
markiz37
08-31-09, 05:44 AM
Ditto what Greg said. Excess intercooler pressure usually means that the valves in the second stage have a problem (or a plugged up intercooler).
Most likely the 2nd stage intake is leaking, allowing high pressure air back into the intercooler.
On the 150 vs 175 - the pressure switch has gone out of calibration or has been adjusted.
Most likely the 2nd stage intake is leaking, allowing high pressure air back into the intercooler.
On the 150 vs 175 - the pressure switch has gone out of calibration or has been adjusted.
tpeerson
11-06-09, 08:53 PM
Thanks for all the input. It turned out that one of the gaskets was deteriorated, causing a leak between the reed valves. A set of new gaskets and $80 later the sputtering has stopped! I still have to figure out the lower shut off pressure. I did try at least three different pressure gauges and got readings from 130 to 155 psi. How are you supposed to determine which one is accurate?