Efficient Vertical Pipe Freeze to change radiator valve

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=QNydNgj0s54

Demonstration of 10-15 minute pipe freeze with around 60g of pipe freeze. Uses a cup made form a 50mm section of pipe insulation.

Pipe freeze, demonstration, example, 15mm, copper pipe, change, radiator valve, virtical pipe, efficient
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