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Flexible can leak too as I found out in October.
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2 reasons straight off, 1,
you need a U bend to provide a water barrier to prevent smells coming back int the kitchen, bathroom etc, secondly waste flex of 40ml plus would need to concertina for strength and flexibility purposes, providing trapping areas for bits of food etc to begin to build up, eventually causing a blockage. the smoother the piping for waste the better. |
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3
dont want benders in ur bathroom |
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You don't want a bender near your waste pipe that's for sure.
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i have never understood why some plumbers use solvent weld when the push fit system works just as well
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Push system fittings tend to want to point wherever it suits them. Welded pipes stay where you tell 'em.
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Apart from that...the O-ring seal is designed to work under pressure(dynamic). It doesn't work well at ambient pressure.
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