Ron Hoffman
New Member
- Messages
- 3
- Reaction score
- 0
- Points
- 1
Hi all,
I have had great success finding answers on this forum.
I'm new to posting on the forum and have a puzzler that has stumped me.
I hear a single bang/thud noise from my hot water line after running hot water for a few minutes.
A bang/thud sound resonates through the basement joist to the floor above a few minutes after the hot water begins flowing through the 3/4 copper pipe in basement. I am certain it is not water hammer because the noise is not heard until after the hot water has run for a while and a few minutes after it is shut off. Thinking it has something to do with the copper pipe expanding and contracting, I loosened the straps securing the 3/4 copper run to the joist, however I still have the noise. I am not sure how long I have had the noise because the heat trap nipple in the top of the hot water tank was extremely loud. I recently had the nipple replaced and had new 3/4 L copper runs put in the basement because of heavy corrosion (pinhole leaks). Also, I had a pressure reducing valve and expansion tank installed and the incoming water pressure is set to 60 psi.
Could the copper pipe be pressed to firmly against the joist causing the noise?
I have M copper coming out of the hot water tank for a few feet with two 90 degree elbows before
connecting to the L copper pipe. Could there be a different rate or amount of expansion between the
L and M copper pipe causing the noise?
Any ideas on what might be causing the noise?
Thank you for any and all help.
Ron
I have had great success finding answers on this forum.
I'm new to posting on the forum and have a puzzler that has stumped me.
I hear a single bang/thud noise from my hot water line after running hot water for a few minutes.
A bang/thud sound resonates through the basement joist to the floor above a few minutes after the hot water begins flowing through the 3/4 copper pipe in basement. I am certain it is not water hammer because the noise is not heard until after the hot water has run for a while and a few minutes after it is shut off. Thinking it has something to do with the copper pipe expanding and contracting, I loosened the straps securing the 3/4 copper run to the joist, however I still have the noise. I am not sure how long I have had the noise because the heat trap nipple in the top of the hot water tank was extremely loud. I recently had the nipple replaced and had new 3/4 L copper runs put in the basement because of heavy corrosion (pinhole leaks). Also, I had a pressure reducing valve and expansion tank installed and the incoming water pressure is set to 60 psi.
Could the copper pipe be pressed to firmly against the joist causing the noise?
I have M copper coming out of the hot water tank for a few feet with two 90 degree elbows before
connecting to the L copper pipe. Could there be a different rate or amount of expansion between the
L and M copper pipe causing the noise?
Any ideas on what might be causing the noise?
Thank you for any and all help.
Ron
Last edited: