Propane is
stored as a liquid under pressure inside the cylinder.
On a hot day, liquid expands and pressure increases. To
guard against excessive pressure, every cylinder is
equipped with a pressure relief valve which opens
automatically to release gas and then closes when
pressure is reduced.
If the cylinder is
UPRIGHT,
a small amount of vapor
is released.
If the cylinder is
HORIZONTAL,
a large amount of liquid propane is released.
Liquid propane is highly volatile.
It vaporizes instantly at a rate of about 270 to 1. Put
another way; if one cup of liquid propane is
released, it instantly becomes 270 cups of pure
propane vapor. Mixed with oxygen, it forms a
combustible fuel which can readily be ignited by such
ordinary sources as a cigarette or a spark from an
electrical connection in your automobile. Unfortunately
there have been many serious personal injury accidents
over the years.
$8.00 plus tax