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Should have used the DML ACME Gas bypass kit available from Amazon, Argos and all good retailers

https://www.amazon.co.uk/Interline-57600889-Bypass-Pumps-Multi-Colour/dp/B00CO4GZVI

Heck Allan your showing your age on that Hydrox subject. I dont think many forum members were around on the 4th May 1985 at Boulevard De L'Océan outside Marseille let alone wondering if compressing...

The fire was proberbly contained inside and around the gas oven at the back of the house a Methane/Air explosion with total combustion resulting in the resultant overpressure air blast from the...

Nah it was pretty much spot on topic, oxygen cylinder, open valve, sparks fire and death.
At least she wasnt blending in the place so I guess the insurance will cover.

Here is another today...

I guess I didnt miss much from being banned then. The OP never came back to tell us if he got evicted and no one was killed in the blast. Well almost.

But I was going to add before I was so rudely...

In addition to FP's point There is another more difficult aspect of your "Storage" condition.
It is one thing storing a high pressure cylinder in your flat

Quite another "Mixing on Elm Street"

1. Define "I live in a flat"
A 20th Floor Flat in the Grenfell Towers North Kensington. The answer will be no.

2. Define unsafe Oxygen cylinder, its size and weight. You use a common lift to hike...