Bob,

To continue one of my thoughts:

You have indicated that the keyed valves are more prone to leaking than a ball valve. My concern with a non-keyed valve is when some toddler comes along and turns that 1/4 turn and the gas flows uninterrupted into the fireplace. The advantage of the keyed valve is that the key can be removed and put up high where little Johnny can't get to it. I suppose the handle can be removed from the ball valve, but that is not intuitive.

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What is the circumference of a moose?