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4.14 LATCH OPTION - PREPARE THE PRV
(When installing Pegasus models that do not include a latch or do not require the latch
to be used … skip to section 4.19).
Lock the PRV top
chamber by closing the
valve to the top
chamber, if possible.
Shut both the input
and output path of the
pilot valve together (at
the same time).
This will ensure that
the volume of water
contained in the pilot
valve will remains
constant; its
diaphragm is locked in
position.
The two steps described above will allow work to commence on the pilot valve control
pipework.
Note: The upper chamber of
the PRV valve is now
locked in position.
The output pressure is
not regulated, and any
variations in inlet pressure
will affect the output
pressure.
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