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-   -   Water hammer noise and sprinkler (http://www.diychatroom.com/f7/water-hammer-noise-sprinkler-173693/)

digitalplumber 03-05-2013 08:44 PM

Water hammer noise and sprinkler
 
Replaced some old galvanized pipe with copper in master bath. Intent is to do the whole house.

Turned the sprinklers on and now 2 of the valves cause a water hammer noise not heard before.

Any thoughts?

jmon 03-05-2013 08:52 PM

Maybe new copper pipe is reacting with old galvanized pipe and creating higher pressure causing water hammer. Probably a couple water hammer arresters should quiet it down. Just a thought.

digitalplumber 03-05-2013 08:54 PM

Quote:

Originally Posted by jmon (Post 1130796)
Maybe new copper pipe is reacting with old galvanized pipe and creating higher pressure causing water hammer. Probably a couple water hammer arresters should quiet it down. Just a thought.


Placement LOCATION?

jmon 03-05-2013 09:00 PM

do u hear it all the time? Or just when turning on and off?

digitalplumber 03-05-2013 09:04 PM

Quote:

Originally Posted by jmon (Post 1130802)
do u hear it all the time? Or just when turning on and off?


ON OFF and only 2 valves located in backyard, which is close to this bathroom.

jmon 03-05-2013 09:06 PM

DP, this maybe a helpful link for you, check it out when you have time. Talks about water hammer and irrigation systems etc. sorry I meant to post link not copy. Added link.

link here

jagans 03-05-2013 09:23 PM

Your original post is pretty confusing for a frequent poster. "I replaced pipe in the bathroom and now the sprinklers hammer?"

Pretty Bizzare. Has all the new work had all the air bled off?

digitalplumber 03-05-2013 09:26 PM

Quote:

Originally Posted by jagans (Post 1130822)
Your original post is pretty confusing for a frequent poster. "I replaced pipe in the bathroom and now the sprinklers hammer?"

Pretty Bizzare. Has all the new work had all the air bled off?

Not exactly what I said, but no only one valve in the shower has yet to be bled. New sink lines hot and cold have been as well as new toilet line. But shower valve has not been bled yet.

TheEplumber 03-05-2013 10:23 PM

Double check your new work and make sure the pipes are secure and not banging around.

digitalplumber 04-28-2013 05:50 PM

OK so the hammer is still there and now we are getting a serious vibration or flutter when the shower valve is turned from the full on position to a mid mix valve position. All pipes secure.

So I guess I need to add some water hammer devices?

jmon 04-28-2013 08:23 PM

"E", assuming DP bled and rechecked all work, is it possible a pressure regulator could be at fault? Rereading the thread, he never had any problem with hammer, vibration or flutter until he replace some galvanize pipe with copper pipe, then turned on his sprinklers. Thanks.

digitalplumber 04-28-2013 08:29 PM

Quote:

Originally Posted by jmon (Post 1169071)
E, assuming DP bled and rechecked all work, is it possible a pressure regulator could be at fault? Rereading the thread, he never had any problem with hammer, vibration or flutter until he replace some galvanize pipe with copper pipe. Thanks.

A little more history about this:

The shower we replaced had the plumbing on a wall we took out. Moving to another wall placed the piping under a low roof line so 12-18 inch galvanized pipe arrestors were not replaced.

I have been looking online and apparently the ones that are made can be installed in any direction.

I can do this, but also need to know if I cannot get the arrestor right above the valve, what is the farthest I can install it?

Since I also here it when the sprinkler goes on and off, can I get buy with just the cold side?

jmon 04-28-2013 08:36 PM

Thanks for clearing that up for us DP.

jmon 04-28-2013 08:47 PM

Quote:

Originally Posted by digitalplumber (Post 1169077)
I can do this, but also need to know if I cannot get the arrestor right above the valve, what is the farthest I can install it?

I would say, try to get arrester as close as possible to the valve.

Quote:

Originally Posted by digitalplumber (Post 1169077)
Since I also here it when the sprinkler goes on and off, can I get buy with just the cold side?

Maybe. I would install one on both hot and cold.

Let's see what "E" reccommends, he should be on soon. Thanks.

Seattle2k 04-29-2013 11:23 AM

When we moved into our house, we were delighted to find a section of pipes vibrated extremely loudly, while toilet was filling or sink was running. I replaced the toilet, but the vibration remained. Then, I drained the entire system...hot and cold lines, including the water tank. Filled it all back up, purged air out of the lines, and vibration was gone. I don't have much explanation, but it worked. Could've been bad angle stop valves, they were shot after 20 years, but I didn't touch them at the time.


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