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Old 04-13-2012, 01:08 PM   #16
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water level equalizing in sump pump basin?


Agreed, but we are talking about two different things.

You are talking about a small air bleeder hole to allow water between the pump and the check valve to drain back out and avoid air locking the pump.

I was referring to the point that the pump discharges into a long pipe to drain away from the house. One pipe connected to another with an air gap to avoid the siphon effect.

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Old 04-13-2012, 01:16 PM   #17
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water level equalizing in sump pump basin?


Great discussion; Do I still see two schools of thought: 1) basin with water in it = fine. 2) Basin full of water = bad. ?
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Old 04-13-2012, 03:03 PM   #18
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water level equalizing in sump pump basin?


(1) Basin with water= fine + raised float, so water may find its level. Check it more in the dryer months to make sure its not stagnet
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Old 04-13-2012, 03:11 PM   #19
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water level equalizing in sump pump basin?


Could you test to see if you are pumping the same water over again by dumping dye in the pit and checking the color of what drains back in thru that inlet pipe?
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Old 04-13-2012, 03:53 PM   #20
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water level equalizing in sump pump basin?


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Originally Posted by iamrfixit View Post
Agreed, but we are talking about two different things.
I was referring to the point that the pump discharges into a long pipe to drain away from the house. One pipe connected to another with an air gap to avoid the siphon effect.
This is what I was referring to,is there a min.amout of feet before you should be concerned with this?
OP seems to have a long run.
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Old 04-13-2012, 04:49 PM   #21
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water level equalizing in sump pump basin?


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This is what I was referring to,is there a min.amout of feet before you should be concerned with this?
OP seems to have a long run.

It is definitely better to keep the pipe from the pump to the point of discharge as short as possible, that is best for the life of the pump and for the best pumping capacity. As long as the pump dumps into a larger tile line that flows by gravity it could go a great distance, very long distances might require using a larger diameter tile.

My particular setup has a 3" tile from just outside my basement 70 feet to the storm water intake out by the street. My sump pump only lifts the water from the basement out through the rim joist and discharges into the tile standpipe. The water is only actually pumped about 9-10 feet, the 3" tile line drains away by gravity only and easily takes everything from the 1.5" discharge pipe of my 3/4 HP pump even with the pump running continuously.
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Old 04-13-2012, 06:42 PM   #22
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water level equalizing in sump pump basin?


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Great discussion; Do I still see two schools of thought: 1) basin with water in it = fine. 2) Basin full of water = bad. ?
Change in my attitude.

Set the sump pump turn on float anywhere below the basement floor level to minimize pump running, but keep an eye on the basement floor at the far side when the weather turns wet suddenly.

If you do get water seeping up onto the floor, wait a few days after each adjustment you make to the float level before concluding you need to make yet another adjustment. The first downward adjustment of the float should not be too small.

Optionally flip on the pump float manually during dry weather. Repeat once or twice. If the water insists on seeking a level inside the pit then leave it be.

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Last edited by AllanJ; 04-14-2012 at 06:51 AM.
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