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Member postings for Brian Meek

Here is a list of all the postings Brian Meek has made in our forums. Click on a thread name to jump to the thread.

Thread: Copper pipe Diameter Reduction
31/03/2020 20:05:11

Many thanks to all of you who answered my query.

Nothing to photograph as system is dismantled.
Just need to reduce the O/D of 22mm copper pipe to approx 21.3mm, preferably without sleeves.

Seems I must think again.

frown Brian

29/03/2020 14:47:00

Thank you for your replies.

As stated I have tried reducing-sleeves.
Their external length does not leave enough room free for the nut to compress the olive.

Room is tight because I cannot move the mating valve.
It is close to a right-angle bend that I need to connect (it is 22mm bore).

Hence my need to have a reduced diameter over a short length.

Hope this makes sense.

frown Brian

28/03/2020 17:49:40

Repairing my central heating system, I have difficulty in mating modern 22mm o/d pipe with old ¾ inch bore system to fit a new pump.

The o/d of ¾ inch pipe is approx 21.3 mm, ie the metric bore of two valves. I have solder‑in adapter sleeves, ie 22mm to 21.3mm, but their length plus a length of ¾ inch pipe each is too long to fit into place.

A You-Tube video showed a very old tool to squeeze 22mm down to 21.3 mm, but no comment on its effectiveness. Is this feasible or safe?

Perhaps I could make one.
I would have thought that a rolling system would be necessary.

Any advice would be very welcome.
Brian

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