There are two main categories of valves that are produced by Andair.
The Standard range incorporates the 3/8"(FS20) and the 1/2"(FS25)
Selector Valves.
These valves allow for multiple tank switching of one fuel line.
The other type is the Duplex valve. These units have two separate
compartments that allow for two fuel lines to be switched simultaneously.
These valves are used for fuel injected engines that require the fuel to be
returned to the tank from which it was drawn from.
Each fuel selector has some great features that make it different from
the rest. To begin with, the
valve operates using a brass ball valve that is highly polished before
assembly, then a PTFE gland is packed against it. The feel of the valve
is very smooth.
Click for exploded view of seal assembly.
A number of design features allow a positive selection action. There is a
large red
ever with 'Fuel' engraved on it and a clearly labelled fascia plate
to indicate which tank has been selected. The lever also incorporates a
safety detent mechanism.
This feature acts in two ways. It allows for a good solid detent at each
tank position and also the
button on top of the lever must be raised to switch the fuel off. All
these features help prevent
the pilot switching the wrong tank or turning the fuel off.
Click for exploded view of lever assembly.
All of the valves produced can be supplied with a choice of fittings, an
extension and even custom
engraving. See the pictures to the left for links to the various pages.
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