Water pipes vibrating

All of a sudden when I turn off either hot or cold water spigot quickly, I hear the pipe rattling under the floor. This happens everyone - bath, kitchen, washer.

I suspect that a hanger may have come loose - easy to fix. Bit the big question is how to prevent the force of the water shutting off to avoid the sudden pressure opening a leak in a weak connection.

I know I can install an air volume pipe or tank above the line to reduce the sudden pressure. But I'm wondering if maybe the water line pressure coming into the house might be too high. What's the nominal city water pressure range? And, if I install a pressure reducer, the ones I have seen only reduce the pressure after a valve is opened -- the pressure in the line when all valves are closed is the same as the upstream line pressure.

Does any of this make any sense?

Thanks in advance.

Reply to
Yuben
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It may be a venting issue too. Just as another thought.

Reply to
FrozenNorth

It is if it's accessible.

Bit the big question is how to prevent the force of the water shutting off to avoid the sudden pressure opening a leak in a weak connection.

I'd say 45 to 60 or so is common from what I've seen.

And, if I install a pressure reducer, the ones I have seen only reduce the pressure after a valve is opened -- the pressure in the line when all valves are closed is the same as the upstream line pressure.

Can't say I've looked at them in detail, but I don't see why that would be. It would defeat one of the main purposes. And I don't see why a design would work that way. But then you only need one if your pressure is too high and that's the problem.

Reply to
trader_4

, I hear the pipe rattling under the floor. This happens everyone - bath, kitchen, washer.

question is how to prevent the force of the water shutting off to avoid th e sudden pressure opening a leak in a weak connection.

e the sudden pressure. But I'm wondering if maybe the water line pressure coming into the house might be too high. What's the nominal city water pre ssure range? And, if I install a pressure reducer, the ones I have seen on ly reduce the pressure after a valve is opened -- the pressure in the line when all valves are closed is the same as the upstream line pressure.

how can a venting issue cause problems in a supply line?

vents are in sewer lines

Reply to
bob haller

You are right, I misread it, was taking it as when draining.

Reply to
FrozenNorth

You can get a pressure gauge at Amazon for about 10 bucks. Screws onto a typical hose type fitting. May not be the problem, but good to know anyway.

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Reply to
Ed Pawlowski

Thats what I was thinking or the water pressure was recently raised, since the OP said this suddenly occurred.

Reply to
Paintedcow

I hear the pipe rattling under the floor. This happens everyone - bath, ki tchen, washer.

uestion is how to prevent the force of the water shutting off to avoid the sudden pressure opening a leak in a weak connection.

the sudden pressure. But I'm wondering if maybe the water line pressure co ming into the house might be too high. What's the nominal city water press ure range? And, if I install a pressure reducer, the ones I have seen only reduce the pressure after a valve is opened -- the pressure in the line wh en all valves are closed is the same as the upstream line pressure.

You may have an existing bad pressure reducer. Vibrating pipes is characte ristic of that.

Reply to
John G

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