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 Post subject: Connecting Waste Pipes
PostPosted: Tue Sep 19, 2017 9:07 pm 
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Hi guys is there any reason why i cant connect my basin , bath and shower all in to the same 40mm before running out side to my soil stack... do i need to put anti vac on the basin and bath and or non return on maybe the shower and bath..
thanks Flint...


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PostPosted: Thu Sep 21, 2017 6:08 pm 
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40 mm is a bit small for that lot... anti syphons are almost certainly required.

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PostPosted: Fri Sep 22, 2017 6:52 am 
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Depending on the layout...you could up the size to 50mm as soon as possible in the run which would help but yes you'd be best putting anti-syphon traps on either way.



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PostPosted: Sun Sep 24, 2017 9:19 am 
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Single Stack Soil Vent system limits the run length of waste pipe.
40mm waste pipe is far too small.

Golden rule; Air behind water!!!

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PostPosted: Sun Sep 24, 2017 9:21 am 
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Maz123 wrote:
Depending on the layout...you could up the size to 50mm as soon as possible in the run which would help but yes you'd be best putting anti-syphon traps on either way.


He'd be far better following the rules regarding Single Stack systems!!

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PostPosted: Sun Sep 24, 2017 4:41 pm 
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Dickie wrote:
Maz123 wrote:
Depending on the layout...you could up the size to 50mm as soon as possible in the run which would help but yes you'd be best putting anti-syphon traps on either way.


He'd be far better following the rules regarding Single Stack systems!!



I did say "depending on layout" as none of us yet know what length or where the run goes or where it connects to the stack...was simply trying to help.


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PostPosted: Tue Sep 26, 2017 6:30 pm 
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cheers for the suggestion ive decided to run all three through the external wall and in to a 90 vert bend and have them running in to the same 40 there leading to a strap or short boos into the 110 stack ..


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