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Pump Issues

Shane Olvitt

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Sep 18, 2008
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Shane Olvitt
Have a 15 year oldish US Products portable. Has a heater and adjustable pump on it. Been sitting in the garage a while and decided to pull it out and clean it up. When I turned everything on the pump just kept building pressure , I would pull the trigger and it would come down to normal adjusted pressure. As soon as I would let off it would just start climbing, to the point of it blowing a pump pressure line. Any idea of what’s going on, when I last used it it was fine.
 

PistolPete

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Sep 28, 2014
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Peter Dymond
Have a 15 year oldish US Products portable. Has a heater and adjustable pump on it. Been sitting in the garage a while and decided to pull it out and clean it up. When I turned everything on the pump just kept building pressure , I would pull the trigger and it would come down to normal adjusted pressure. As soon as I would let off it would just start climbing, to the point of it blowing a pump pressure line. Any idea of what’s going on, when I last used it it was fine.
Pressure regulator stuck
 
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Ara Klujian

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Jun 19, 2008
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I'm with PistolPete. I would back out the regulator and run some descaler through the machine. When pressure rises like that something is blocking the bypass or the regulater is sticking.