Today all hot air balloon burners have one thing in common. They use liquid
propane as their fuel
source. When using liquid propane the burner has to serve a dual purpose.
First it must convert
the liquid propane to a vapor, so it can be burnt at the orifices to produce
the heat that makes
the balloon fly. Achieving this function is where each balloon manufacturer
differs in burner
design. If you compare the shape of the Avian burner coils to other
manufacturers, you'll notice
it has a larger circular radius with few 90 degree bends in its preheat
coils. The reason we
design our burner coil this way is to utilize a very basic principle of fuel
"The fewer the restrictions to flow, such as tight
bends in tubing, in the
complete burner system, the greater the pressure will be when it is released
at the burner
orifices, giving a higher BTU output."
In 1975 we also discontinued the Rego/toggle valve commonly used in other
balloon burners for the
much simpler BALL VALVE design. The Rego/toggle valve design requires
periodic maintenance to
assure that propane leakage does not occur. The ball valve, on the other
hand, is maintenance free
and does not contain the "O" rings found in the Rego/toggle valve design.
Also no lubrication is
required for the life of the ball valve as in the other valve design.
Another reason we discontinued the Rego/toggle valve was because of its poor
characteristics. This valve design runs the propane in an up, around, and
down flow pattern making
for considerable restrictions in the valve. The ball valve, on the other
hand, has a large flow
port, a 3/8" diameter hole, that runs straight through it. This gives the
ball valve unbelievable
advantages in flow characteristics.
Avian's burner design is further complemented by its fuel system design. A
burner can perform only
as well as its fuel system. Avian's fuel system is engineered to allow
maximum fuel to the burner.
We did this by first custom designing our 15 gallon stainless steel fuel
tanks. Although most
stainless steel fuel tanks look the same on the outside, our tanks have a
number of distinctive
differences. As you review our design, you will notice we chose to install
the fuel valve, bleeder
valve, and pressure relief valve separately. This method is more expensive,
but the benefits out
weight the expense.
We feel it is better to have three separate valves to handle three separate
functions. Some other
tanks on the market utilize a single valve to do all three functions. For
the valve to do this, a
very small diptube had to be used. The diptube size most commonly used is a
1/8 inch pipe. Our
liquid withdrawal diptube is a 1 inch O.D. stainless steel tube. This allows
an unrestricted fuel
flow to the tank valve.
To complete our fuel system, the hose assembly starts with a hand tighten
POL which is attached to
our hose and mandrel fittings. We use the mandrel type fittings because more
fuel is allowed to
flow through these fittings than a non-mandrel fitting. This type of design
is used throughout the
fuel hose system to assure there are no restrictions in the system.
These design features, along with our trouble free vapor pilot lights, have
given the Avian burner
designs a distinctive edge in high performance burner technology.
Skyhawk & Falcon II
Stainless Steel 15 gallon Fuel Tank
Magnum IX & Turbo 8