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 Water pressure drops
Author: MTK (CO)


I'm having a problem where my water pressure drops from other fixtures if the dishwasher or Washing machine comes on.

I deduced it (maybe incorrectly) to be a failing water pressure reducing valve. I replaced it with a Watts LFN45B-M1. This seems even worse. I bumped the pressure up to 60 (Read at my washing machine fitting). I turn on the kitchen faucet and it drops to ~ 55. If I flush the toilet, it slowly drops to nearly 0.

The valve is on the main inlet right before the water meter (if that info helps at all).

I appreciate any help/advice anyone might be able to give.


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 Re: Water pressure drops
Author: packy (MA)

is there a filter screen on the inlet of the new PRV?
sometimes when turning water off and back on it loosens debris ??

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 Re: Water pressure drops
Author: MTK (CO)

No, there was no screen that I could see.

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 Re: Water pressure drops
Author: steve (CA)

What type of valve is the main? Gate, ball or globe? What material is the water piping made of? Galvanized steel, copper or plastic?

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 Re: Water pressure drops
Author: MTK (CO)

I think it's a ball valve - red handle that you turn 90 degrees?

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