Waste pipe through external wall

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17 Apr 2007
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I have my new kitchen sink waste to install.
With solvent joints, is there any problem with pushing the 90° bend into the wall to get the pipe drop to the drain closer into the wall?
I intend to use expanding foam to seal around the pipe.
 
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Use a pipe snug around the pipe in the external wall and the 90 will be a tight fit into it
 
The bend on the inside is a compression type. The pipe snug will not be fitted yet. I'll leave it for a week to test for leaks although the solvent bend on to the pipe certainly seemed solid before I installed the pipe into the wall.
 
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This is the pipe run. I going to add a couple of 135° bends at the bottom to set the outlet is square into the drain and the pipe run closer to the wall.
The other pipe is now redundant. It was for the washing machine drain but that now drains out with the sink.

full
 

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