BOC (Linde) adopted the angle drilled Muller valves on 'commercial' cylinders because of so many torpedoed cylinder incidents, being angle drilled they spin rather than launch when snapped off.
I prefer a 45° lay-back 4 wheel trolley when moving cylinders any distance, simple 2 wheel types are bad ergonomically. BOC also supply a 'churn' adaptor for hand-guarded cylinders.

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