High Pressure - Low Flow

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High Pressure - Low Flow

Author: BigDad (CO)

Need help diagnosing low flow. Pressure tests at outside faucet at 100 psi which I believe is too high. Water flow throughout the house is low, especially when more than one fixture is being used. Pressure at inside sink also 100 psi until toilet is flushed, then drops to about 25 psi until toilet refills, then returns to 100. Does this indicate pressure reducing valve has failed and should be replaced?? Any other possible causes??

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Re: High Pressure - Low Flow
Author: hj (AZ) That is about the ONLY cause.
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Re: High Pressure - Low Flow
Author: Paul48 (CT) How old is the house? Any galvanized piping?
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Re: High Pressure - Low Flow
Author: Wheelchair (IL) what is the source of your water? Well or City Supplies Best Wishes
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Re: High Pressure - Low Flow
Author: BigDad (CO) House is about 15 years young, and piping is all copper. THANKS
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Re: High Pressure - Low Flow
Author: BigDad (CO) Water source is city.
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Re: High Pressure - Low Flow
Author: hj (AZ) A well would NOT have a pressure reducing valve.
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Re: High Pressure - Low Flow
Author: PlumberLoren (CA) It is possible that a soft copper line has been pinched to reduce flow maybe under a slab.
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