In an earlier contribution to this discussion,
Tim S wrote:


The two things that worry me about plastic a

1) Will the push-fit grippers give way and blow the joint apart (same
with copper push fit)? My static mains pressure is 7.5 bar (fairly
high).

2) How long do those O-rings actually last? I pondered this also
after I unclipped the cooker's from the gas bayonet open the other
day...


Nothing lasts for ever - not even copper. I plumbed my utility room in
plastic nearly 20 years ago - and that's still going strong. It's at the
opposite end of the house to anywhere where there was previously a water
supply - and so involved a tortuous route along the landing and under a
bedroom floor. It was a (relative) doddle to drill the joists and pull a
single length of plastic pipe through rather then trying to wangle copper
in - which would have involved multiple joints.
--
Cheers,
Roger
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