Exactly. I will definitely need to improve my ASCII art. I got nowhere near as good a drawing as that.
Exactly. I will definitely need to improve my ASCII art. I got nowhere near as good a drawing as that.
Not exactly speedfit or Hep20 though is it! ;-)
Well, the couplings for the individual house feeds looked a bit cheap-and-cheerful, they had to do mine twice, blanking off the first attempt.
I wonder how they cut it?
So if you wanted could you use a regular copper pipe, put pip insulation around it, tape up the joints with gaffer/duct tape and the concrete it into the slab
-- Cordless Crazy
Yup - as long as you chose an insulation where the wet mortar would not soak through it while wet
On possibility is to use standard insulation round the pipe and then either tape, or better still, use a bit of trunking
Um. The 3m runs to existing pipework aren't an issue, as long as there's a bit of give at that end, and/or the long runs through the wall have some room for sideways movement. The 4.5m runs through the wall will put some strain on the connections to the radiator, though, which will have to be taken by flexing in the vertical connections if the runs are exactly like this. You'd be better off like this (I'll only do the LH rad. connection):
########## ########## | | | | \ \ \ \____________________ \_____________________\_____ \ \ \ \
For the OP's situation he needs a fair amount of free play in the piping, so a trunking would be useful.
That makes a lot of sense. Of course, it now goes OT as my wife has decided that I'm too slow and we'll get a plumber in (not d-i-y any more). Do you think Mr Plumber will consider the expansion issues? I'm going to have to find a tactful way of telling him his job.
He only needs a few mm of expansion room in total along the length.
Personally I would bury plastic sleeving pipe and then run speedfit through it, then there is no need to worry about additional pipe protection and accommodating movement.
There is more expansion with Speedfit than with copper, but I think that this is a more sensible solution. As long as the pipe is cut properly with a cutter then it should be fine.
It's probably OK to cut the conduit pipe with a hacksaw, though.
You could cut the speedfit pipe with a hacksaw too if you used inserts and compression fittings.
This debate has been run many times. Results can be tearfull.
Results of cutting with a hacksaw, or starting the debate?
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