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Just noticed my pressure regulator hissing – leaking air?

Devilbiss Prof 4000 air compressor

by Daniel(Windsor, Ontario) Using a DeVilbiss Pro 4000 compressor, with a pressure switch that causes the compressor to kick in…

DeWalt D55146 leaks air around Regulator knob

D55146 regulator repair kit - available from online retailers

What’s the fix for DeWalt D55146 that leaks air around Regulator knob by John Harrell(Orange, Texas) I have a DeWalt…