Plumbing Forum - Professional & DIY Plumbing Forum > General Plumbing Discussion > General Plumbing Help > Thump sound near main valve

LinkBack Thread Tools Display Modes
Old 02-02-2014, 03:39 AM   #11
Junior Member
Join Date: Feb 2014
Posts: 3

Two things I would check- first check the toet fill valves and see if toilets run or if the fill valve is a quick closing style- second open the wall and see if maybe a pipe is not properly fastened( the pressure moving when you open and close things may be causing water hammer in the pipes and cause inch them to thump against Sheetrock or wood

Sent from my iPhone using Plumbing Forum

masterplumbercliff is offline  
Reply With Quote Quick reply to this message
Old 02-02-2014, 04:36 AM   #12
Join Date: Mar 2012
Posts: 838
Liked 178 Times on 146 Posts
Likes Given: 124


I am in agreement with Phishfood. I think it's the pressure reducing valve.

IFIXH20 is offline  
Reply With Quote Quick reply to this message
Old 02-03-2014, 04:28 PM   #13
Junior Member
Join Date: Jan 2014
Posts: 7

I was able to determine the expansion tank was bad, I bought one and attempted to replace it, but it wad tight as he!! and I didn't want to damage anything so I had a plumber come out. He agreed it was bad, and said he usually replaces the exp. tank and prv at the same time, but we'll see if it was just the tank. So far so good, but that was only about an hour ago. I ran the sink and didnt hear it. He was able to hear the thump before he got started. I will give an update in a day or so if that was indeed the issue. Thanks for all the replies!

Ernina is offline  
Reply With Quote Quick reply to this message

Quick Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
main water shut off valve won't turn tntgreen2 General Plumbing Help 4 09-24-2013 12:18 AM
Broke off main shut off valve, well system, can I fix it? plumbingnewbb General Plumbing Help 1 09-24-2012 10:15 PM
No valve in curb-side water main. whatisrice General Plumbing Help 9 06-19-2011 01:54 PM
Help: Replace Main Shut Off Valve CWC General Plumbing Help 3 04-13-2011 06:30 PM
Valve replacement at main supply poorboywilly General Plumbing Help 6 06-21-2010 09:55 PM