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.

On Mon, 24 Oct 2016 10:30:17 -0700, "Yuben"
wrote:

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.

If the pipes have come loose, fix that. You could try turning down
the stop valve at each water feature, too. Was there recent work on
supply lines by the city? Maybe open all your fixtures at once and
let the air out... YMMV

On 2016-10-24 1:30 PM, Yuben wrote:
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.

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

--
Froz....

On Monday, October 24, 2016 at 1:30:27 PM UTC-4, Yuben wrote:
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.

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 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?

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.


Does any of this make any sense?

Thanks in advance.

On Monday, October 24, 2016 at 6:57:27 PM UTC-4, FrozenNorth wrote:
On 2016-10-24 1:30 PM, Yuben wrote:
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.

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

--
Froz....

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

vents are in sewer lines

On 2016-10-24 8:28 PM, bob haller wrote:
On Monday, October 24, 2016 at 6:57:27 PM UTC-4, FrozenNorth wrote:
On 2016-10-24 1:30 PM, Yuben wrote:
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.

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

--
Froz....

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

vents are in sewer lines

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

--
Froz....

On 10/24/2016 7:24 PM, trader_4 wrote:
On Monday, October 24, 2016 at 1:30:27 PM UTC-4, Yuben wrote:
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.

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 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?

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.


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.

https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1

On Mon, 24 Oct 2016 21:14:18 -0400, Ed Pawlowski wrote:

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.

https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1

Selling a house the buyer inspector said my PSI was to high. During
the day when neighbors we all gone to work. Went in the house,
relieved all the water pressure, then replied -- no it isn't.

They bought the house without me putting in a pressure relief valve.
Pressure may or can be different when the water supply is under heavy
use.

On 10/25/2016 02:35 AM, Oren wrote:
On Mon, 24 Oct 2016 21:14:18 -0400, Ed Pawlowski wrote:

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.

https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1
Selling a house the buyer inspector said my PSI was to high. During
the day when neighbors we all gone to work. Went in the house,
relieved all the water pressure, then replied -- no it isn't.

They bought the house without me putting in a pressure relief valve.
Pressure may or can be different when the water supply is under heavy
use.

The proper fix is to ensure the pressure regulator is set properly and install an expansion tank.

Most people don't give a **** until their plumbing bursts though.

On Tue, 25 Oct 2016 06:55:30 -0700 (PDT), John G
wrote:



Does any of this make any sense?

Thanks in advance.

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

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

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.

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