Question about Porter Cable 18 - Gauge Brad Nailer and Compressor Combo Kit

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Compressor blows off, does not maintain pressure

My Porter cable 135 compressor goes to about 140 psi and then blows off. Is there a way to set it so that it does not blow off and maintains pressure?

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Hi there. This is normal. The pressure is set to stop at around 120-140 PSI as a safety measure. It probably kicks in again around 80 PSI so as to remain pressurized between 80 and 140 PSI. Since most air tools operate in this range, it is ok for the compressor to maintain pressure in that range. You do not want to adjust the maximum pressure safety release valve as it could be extremely dangerous as certain components in the compressor may only be rated up to 140 PSI or slightly higher before they fail or blow apart.

Posted on Jul 25, 2009

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