Copper M-Press Straight Union MI: Undo Without Cutting the Pipe (video guide)

The copper M-press straight union MI from MaxHeatUFH joins copper tube to a male threaded connection through a union, so the joint can be undone later without cutting the pipe. Break the union to take out a pump, valve or appliance.

Here is how it fits and what to check, with the data sheet and install manual to download below.

Key facts

• Copper tube to male thread via a union
• Undo later without cutting the pipe
• For pumps, valves and appliances
• 15mm x 1/2", 22mm x 3/4", 28mm x 1" MI
• Bags of 5

How to fit it

1. Seal the male thread and screw it into the port first
2. Cut, deburr and mark the tube
3. Push in to the mark and run a full press with the same-size M-profile jaw
4. Check the joint is pressed, then pressure test and check the press end, union and thread

Buy it

The Copper M-Press Straight Union MI is available from MaxHeatUFH. Order by 12pm on a working day for next working day UK delivery. Trade customers see their trade price when logged in.

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