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I currently do not have a pressure gauge that fits an outdoor bib but I do have a tire pressure gauge. If I check the pressure at the Schrader valve assuming the system is pressurized, will that give me the water pressure for the house?

isherwood
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Rocky345
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2 Answers2

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It should give the pressure, but might not be quite exact(maybe a few pounds off).

A tire pressure gauge might not be made for water, so if it gets wet(doubt it), it needs to be dried well inside of the gauge.

crip659
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So long as your Schrader valve is on the expansion tank, you will get the pressure of all the pipes connected to the tank. If there is a pressure reducer at the main input, obviously you won't measure the external pressure. Similarly, there may be some balance valves near the hot water tank (if you have one), so take that into account. For another example, if you have radiant heat systems, there's probably a pressure limiter on those specific runs.

Carl Witthoft
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