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I got half of my air pipe system on the wall. 30' of 3/4" with two up and over work drops and a straight drain drop in 1/2" black iron. I've got a union in the middle of the 3/4" and unions for each 1/2" drop. I put 175 psi to it and had leaks at the water filter and the 1/2" union. I expected...

I have a new IR TS4N5 setting in the corner of my shop and plan to use 1/2" black iron pipe along 30' of the side wall. The pipe is rated at 150 psi but the compressor puts out 175 psi. Do I need a regulator right at the compressor to keep pressure at 150? I plan to have three drops, one for air...