10-12-2009, 10:18 PM
Plumbking wrote:
[quote=AllGold]
That thump is the sound of the check valve closing.
:agree:
I have a sewage ejection pump for a basement bathroom and the check valve makes that same sound after the pump stops. It can be quite loud, if you are standing right by the pipe.
![[Image: IMG-2569.jpg]](https://i.postimg.cc/Jn06m2gT/IMG-2569.jpg)
Whippet, Whippet Good