PRV opening prematurely on 919.176920
by Manuel Reyes
(Orange, CA USA)
Older Sears compressor
Trying to use older Sears compressor that has been sitting idle for at least 20 years.
It's a 2 HP / 12 Gallon portable unit.
The Mfg. plate spot welded on tank says 125 psi at 350 degrees, DeVilbiss Co. 1986.
Sears Decal on tank reads – Max 100 psi Model No. 919.176920
Slight oil film on tank, and switch handle doesn't turn on or off the compressor. Plug it in to run and unplug it to stop. Not too convenient or sounding too safe.
Main problem is that the PRV opens up at 80 psi. Thought PRV was faulty so bought a new
125 psi PRV and it still opens up at 80 psi.Can't build up higher working pressure with PRV
blasting out air.
Could use some help here. How do I / we fix this problem. Need air to finish a project.
Appreciate any assistance you can give me.