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I have a two cylinder singel stage pump. It pumps up and then blows bake at the regulator. Where the tube comes from the head to the regulator. I put a new regulator on the pump.

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  • tim_n_janetc Feb 13, 2010

    my problem is.... the compressor is pumping up to 130 psi, and once it shuts off it will blow off air until it drops to 115 psi at the tube thats on the regulator that comes from the head of the pump

  • jaap schildmeijer May 11, 2010

    what type of regulator. mostly there is oly tybe on bottom of it.
    1 connection to feel pressure and 1 conn to blow off after pumping



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Ok then now i understand the problem. it seems to me that the checkvalve is not closed after pumping checkvalve is placed between cilinder and tank. mostly a brass thing with small hose to the regulator and large screwcap. inside is spring and rubbervalve. clean seat. and valve, when worn out maybe turn valve upside down. BEFORE OPENING CHECKVALVE RELEASE PRESSURE. checkvalve makes pressure stay in tank in smal line blows of to start easier. and blows of cilinderhead, and tube to valve. cleaning is less work then reading tyis story. good luck.

Posted on Feb 13, 2010


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when the regulator switches off it will push a needle into the blowoff valve. it blows off air in cilinderhead and pipe going to checkvalve. when it is blowing off constantly please check blowoffvalve under regulator. when it keeps blowing after stopping please clean up checkvalve very often smal rustparts causes these problems. good luck.

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1 Answer

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