Re: [OT] : New water mains fitted... can I use MDPE pipe ineternally ?

[Laurence Mason <laurence@xxxxxxxxxxxxxxxxx>]

Marcus Warrington wrote:
>
> We've just had a new water mains fitted into our property to replace
the old lead mains. We are currently waiting for the "water
board" to come and inspect and commission it. The new mains comes into
the property in the opposite cellar and I will need to join it up to the
old pipe work when the switch over. I want to take the opportunity to
convert the main feed to 22mm instead of the 15mm feed at present. At the
moment we have a load bang whenever a tap is shutoff or the washing
machines fills. From what I've read this is either a banging pipe (which
I've been unable to find) or "water hammer". Research on the net
seems to say that using a larger pipe will reduce the water velocity in the
pipe and help reduce/prevent the water hammer effect.
>
>
If it is water hammer try fitting a shock arrester - again you need to
know where the problem is and fit as close as possible.
BES http://www.bes.ltd.uk have them for
£12.29 + the usual VAT and p&p

Regards,

Laurence