Sump pump question

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snokel

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Hi,
I had a radon system installed and they sealed my sump pump crock, it seems to work well, but there is no vent pipe, it just goes straight out .

How is it able to function being sealed? When it fills with water isn't the air the crock compressed?
I have been reading other threads about sealed under sink sump pumps and they refuse to pump if no vent is added to allow the compressed air to escape when the crock fills up?

So should I add a vent pipe to the sump crock? It had a cover on it all along, but now it's silicone sealed.
It has worked without issue during storms etc.
 

Reach4

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I had a radon system installed and they sealed my sump pump crock, it seems to work well, but there is no vent pipe, it just goes straight out .
By your second "it", do you mean the water from the pump?
 

snokel

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Correct, no vent, just one pipe that discharges the water out of the house and into sewer.
and the cover of the crock is bolted and silicone sealed shut, so when it fills with water there has to be a lot of compression of the
air in the crock.
 

Reach4

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I think there should be a vent to the outside.

Glued shut like that will make it hard to change the pump. I would put in an alarm to let you know if the water rises above its normal range. Also have a plan as to what to do if the sump pump fails.
 
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