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Posted by on October 21, 2009, 9:49 pm
On Thu, 22 Oct 2009 01:24:56 +0000 (UTC), Wayne Whitney
>> The washer is in the basement. The 4" cast iron drain runs 18" below
>> the ceiling. So to have a 36" standpipe I would need to go through
>> the ceiling and into a bay in the wall on the first floor, which I
>> can't do because my wall sit on steel beams.
>Not sure what plumbing code you are under, but I believe the IPC
>states:
>802.4 Standpipes. Standpipes shall be individually trapped.
>Standpipes shall extend a minimum of 18 inches (457 mm) and a maximum
>of 42 inches (1066 mm) above the trap weir.
>So an 18" standpipe is adequate. Is there anyway you can fit that in,
>with the P-trap and the transition from 2" to 4"?
>Cheers, Wayne
No standpipe required at all with a direct mechanical connection.
No vent required when connected directly into the top of a 4" pipe. No
trap required if the directly connected washer unit holds water in the
pump when shut down (which it most definitely will if pumping up 60
inches or so into the pipe.
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Posted by bud-- on October 22, 2009, 11:25 am
clare@snyder.on.ca wrote:
> On Thu, 22 Oct 2009 01:24:56 +0000 (UTC), Wayne Whitney
>
>>> The washer is in the basement. The 4" cast iron drain runs 18" below
>>> the ceiling. So to have a 36" standpipe I would need to go through
>>> the ceiling and into a bay in the wall on the first floor, which I
>>> can't do because my wall sit on steel beams.
>> Not sure what plumbing code you are under, but I believe the IPC
>> states:
>> 802.4 Standpipes. Standpipes shall be individually trapped.
>> Standpipes shall extend a minimum of 18 inches (457 mm) and a maximum
>> of 42 inches (1066 mm) above the trap weir.
>> So an 18" standpipe is adequate. Is there anyway you can fit that in,
>> with the P-trap and the transition from 2" to 4"?
>> Cheers, Wayne
>
> No standpipe required at all with a direct mechanical connection.
> No vent required when connected directly into the top of a 4" pipe. No
> trap required if the directly connected washer unit holds water in the
> pump when shut down (which it most definitely will if pumping up 60
> inches or so into the pipe.
>
In Ontario.
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Posted by Steve Barker on October 22, 2009, 1:09 pm
Aaron Fude wrote:
> Hi,
>
> My washer is basically at the same level as the main stack (or whatever
> its horizontal equivalent). So there is not sufficient elevation to have
> a p-trap on the exhaust (take my word for it - I just can't do it).
>
> So I bought a check valve at HD. I think it's intended for a sump pump.
> Will it solve my problem?
>
> And if so - what's the best location to install it. The PVC exhaust that
> the washer drains into has a vertical part that then flows into a
> horizontal part. Is better to install the check valve is far down the
> stream as possible? or the other way around? or six of one?
>
> Many thanks in advance!
>
> Aaron
i don't think that will work, cause the sump pump check valves are just
a gravity style without a spring. If installed upside down, it'll just
hang open.
s
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Posted by Steve Barker on October 22, 2009, 1:11 pm
Aaron Fude wrote:
> Hi,
>
> My washer is basically at the same level as the main stack (or whatever
> its horizontal equivalent). So there is not sufficient elevation to have
> a p-trap on the exhaust (take my word for it - I just can't do it).
>
> So I bought a check valve at HD. I think it's intended for a sump pump.
> Will it solve my problem?
>
> And if so - what's the best location to install it. The PVC exhaust that
> the washer drains into has a vertical part that then flows into a
> horizontal part. Is better to install the check valve is far down the
> stream as possible? or the other way around? or six of one?
>
> Many thanks in advance!
>
> Aaron
another thought, unless your stated 'horizontal line' is on the ceiling,
all you have to do is get above it. The washer will pump several feet
of head without problem.
s
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Posted by on October 22, 2009, 8:57 pm
On Thu, 22 Oct 2009 12:11:51 -0500, Steve Barker
>Aaron Fude wrote:
>> Hi,
>>
>> My washer is basically at the same level as the main stack (or whatever
>> its horizontal equivalent). So there is not sufficient elevation to have
>> a p-trap on the exhaust (take my word for it - I just can't do it).
>>
>> So I bought a check valve at HD. I think it's intended for a sump pump.
>> Will it solve my problem?
>>
>> And if so - what's the best location to install it. The PVC exhaust that
>> the washer drains into has a vertical part that then flows into a
>> horizontal part. Is better to install the check valve is far down the
>> stream as possible? or the other way around? or six of one?
>>
>> Many thanks in advance!
>>
>> Aaron
>another thought, unless your stated 'horizontal line' is on the ceiling,
>all you have to do is get above it. The washer will pump several feet
>of head without problem.
>s
He said about 18 inches below the ceiling. There is NO problem Just
install as I recommended in an earlier post, as advised by my plumber.
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>> the ceiling. So to have a 36" standpipe I would need to go through
>> the ceiling and into a bay in the wall on the first floor, which I
>> can't do because my wall sit on steel beams.