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Plumbing question RepairNovice 07-09-2008
---> Re: Plumbing question hr(bob) hofmann...07-09-2008
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Posted by RepairNovice on July 9, 2008, 10:03 pm
I'm doing some work on my sump pump pipes.
First time in almost ten years.

I have a couple of questions concerning an air vent.

One reason why I'm doing this work is to stop the pipework from
banging when the sump pump stops and the water starts to flow back
down the pipes.

I may have acted too fast in doing some of the work but just want to
check here to see if might still be OK.

The check valve is located about two or three feet above the pump.
The pipe leaves the house at a height of about seven feet or so above
the check valve.

Is it OK to have the air vent about five feet above the check valve?

Is there an optimal height for the air vent to be located in relation
to the check valve?

TIA

AppliancePartsPros.com, Inc.
Posted by hr(bob) hofmann@att.net on July 9, 2008, 10:56 pm
> I'm doing some work on my sump pump pipes.
> First time in almost ten years.
>
> I have a couple of questions concerning an air vent.
>
> One reason why I'm doing this work is to stop the pipework from
> banging when the sump pump stops and the water starts to flow back
> down the pipes.
>
> I may have acted too fast in doing some of the work but just want to
> check here to see if might still be OK.
>
> The check valve is located about two or three feet above the pump.
> The pipe leaves the house at a height of about seven feet or so above
> the check valve.
>
> Is it OK to have the air vent about five feet above the check valve?
>
> Is there an optimal height for the air vent to be located in relation
> to the check valve?
>
> TIA

My system here in Illinois, USA does not have an air vent, neither did
eitherof my systems when I lived back in New Jersey. How is the vent
connected?

Bob Hofmann

Posted by RepairNovice on July 9, 2008, 11:11 pm
On Wed, 9 Jul 2008 19:56:12 -0700 (PDT), "hr(bob) hofmann@att.net"
>
>My system here in Illinois, USA does not have an air vent, neither did
>eitherof my systems when I lived back in New Jersey. How is the vent
>connected?
>
>Bob Hofmann


Well, when I installed it this evening I was trying to kill two birds
with one stone.

I had a hole in the ABS piping with a small tube running into it (long
story). I wanted to cut out the hole section and at the same time
install this air vent.

I cut about three or four inches of pipe, enough to be replaced by the
pipe fitting and air vent. The air vent fitting is now standing
upright as I was told it should.

It is located approx. 5 feet above the check valve and I'm hoping that
this distance is OK.

This is approx. what it looks like, if this drawing comes through OK:

| |
| |
| | | |
| | / /
| | / /
| / /
| /
| /
| |
| |
| |

TIA


Posted by CL \"dnoyeB\" Gilbert on July 10, 2008, 8:35 am
RepairNovice wrote:

> On Wed, 9 Jul 2008 19:56:12 -0700 (PDT), "hr(bob) hofmann@att.net"
>>
>>My system here in Illinois, USA does not have an air vent, neither did
>>eitherof my systems when I lived back in New Jersey. How is the vent
>>connected?
>>
>>Bob Hofmann
>
>
> Well, when I installed it this evening I was trying to kill two birds
> with one stone.
>
> I had a hole in the ABS piping with a small tube running into it (long
> story). I wanted to cut out the hole section and at the same time
> install this air vent.
>
> I cut about three or four inches of pipe, enough to be replaced by the
> pipe fitting and air vent. The air vent fitting is now standing
> upright as I was told it should.
>
> It is located approx. 5 feet above the check valve and I'm hoping that
> this distance is OK.
>
> This is approx. what it looks like, if this drawing comes through OK:
>
> | |
> | |
> | | | |
> | | / /
> | | / /
> | / /
> | /
> | /
> | |
> | |
> | |
>
> TIA


That's very odd. Which way does the water flow? This is the water leaving
the sump and exiting the house right? Wouldn't the water just flow right
out of the air vent? Whats the point of an air vent here?

My setup also does not have an air vent. But I did add a clean-out pipe to
it that should hold some air which should reduce the hammering a bit. Not
sure how well it works for that purpose.

clean-out plug
__ exit house
\ \ | |
\ \ | |
\ \ | |
--- ---------------| |
| --------------------|
| |
| |
| |
pump


Posted by RepairNovice on July 10, 2008, 3:21 pm
On Thu, 10 Jul 2008 08:35:51 -0400, "CL \"dnoyeB\" Gilbert"

| | /\
| | | Water flow
| |
| | | |
| | / / (In line air vent)
| | / /
| / /
| /
| /
| | /\
| | | Water flows this way
| |

>
>That's very odd. Which way does the water flow? This is the water leaving
>the sump and exiting the house right? Wouldn't the water just flow right
>out of the air vent? Whats the point of an air vent here?

I have added info to the diagram above.
I wondered about water going through the air vent too.
But the guy at the store explained that it has a special shut-off
valve to prevent water flowing through.

>
>My setup also does not have an air vent. But I did add a clean-out pipe to
>it that should hold some air which should reduce the hammering a bit. Not
>sure how well it works for that purpose.
>
>clean-out plug
>__ exit house
>\ \ | |
> \ \ | |
> \ \ | |
>--- ---------------| |
>| --------------------|
>| |
>| |
>| |
>pump

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