Does a sump pump require a dedicated circuit?

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JimKiler

Diamond Member
Oct 10, 2002
3,561
206
106
The older style check valves had a sort of ball mechanism that got pushed up when the pump ran. When the pump stopped the ball would drop back down making a thunk sound. I recently replaced mine (the ball mechanism broke loose and shot out the end of my sump discharge one day). The newer ones just have a rubber flapper mechanism that pretty much runs silently. I sort of liked the old style better.

My 14 month old house makes the thunk sound and it is reassuring to hear specially now that the new pump is so quiet. I totally agree with you.
 

Midwayman

Diamond Member
Jan 28, 2000
5,723
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That thunk is water hammer as the valve slams shut. You can get a silent valve. It drives me nuts as our pump runs all the time. I'm getting a battery backup and put a PTZ IP cam down in the basement so I can check on it if I need to.
 

ControlD

Diamond Member
Apr 25, 2005
5,440
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91
That thunk is water hammer as the valve slams shut. You can get a silent valve. It drives me nuts as our pump runs all the time. I'm getting a battery backup and put a PTZ IP cam down in the basement so I can check on it if I need to.

That is interesting because I have been looking into putting an IP cam near my sump as well. My pump actually died two days ago (funny timing) but luckily I was home to swap in my spare. Lesson learned though, I ordered a Water Commander backup today. I had a battery powered backup at one time but I seem to be too lazy to keep up with maintaining a marine battery.
 
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edro

Lifer
Apr 5, 2002
24,326
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I remember my dad waking me up in the middle of the night during a storm. (he worked 3rd shift)
The power was out and it was pouring outside.
The sump pump float switch was broken, so I had to manually engage it every ~30sec. for about 6 hours.
Once the hardware store opened, he got a new one.

...that was a long night and I remember my hand being frozen.
 

Juddog

Diamond Member
Dec 11, 2006
7,851
6
81
I remember my dad waking me up in the middle of the night during a storm. (he worked 3rd shift)
The power was out and it was pouring outside.
The sump pump float switch was broken, so I had to manually engage it every ~30sec. for about 6 hours.
Once the hardware store opened, he got a new one.

...that was a long night and I remember my hand being frozen.

Sounds scary!
 

Sepen

Diamond Member
Oct 9, 1999
3,189
0
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I had a 15 year old pedestal pump that drew 9 amps at start up and never tripped the 15 amp circuit. I now have a LibertyPumps efficient pump that only draws 5.2 amps, again, never a problem with tripping. And when it rains this baby sings, it goes off every 5 minutes, we are in a swap I guess.
 

Sepen

Diamond Member
Oct 9, 1999
3,189
0
71
That sound is normal. Mine used to make a loud clunk but I bought myself a new silent check valve at Amazon which is much quieter than the old one. Most of the time I can't even hear it.

And Liberty Pumps make some really nice sumps. American made. Plant is about 30 minutes from me.


that's insane.

we have a pump and a battery back up plus a stand alone (old one i had).

My pump is 3-4 years old. this years it's been going a lot. when it turns off it makes a loud "clunk"

i don't think that is good..


edit: weird i been looking about the noise. just read that most likely its the check valve in the piping that is ruined. woooo!