I want to cut insert shutoff valves in the two pipes feeding the shower head. The fotos below show my OZO H/W cylinder system with two pressure cylinders. How to depressurise them to allow cutting the 15ml copper shower pipes?, or do I have to drain the HW cylinder? .........Thanx .......nick
nichosi, Turn off all mains water into your property and turn on the shower, all flow -hot and cold should stop after a short while therby enabling you to fit the valves. There will be water retained in the pipework so allow for this - turning on the lowest hot and cold taps may drain this down. end
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