Operators manual
© 2017 Honeywell International Inc.
Operators manual underground gas pressure reducing station
Type: COCON 13
Page 13
If
the
outlet
pressure
exceeds
the
dome
load,
the
diaphragm
(2)
will
move
downward.
This
results
in
decrease
of
stem
travel
and
allows
the
active
to
compensate
(directly)
for
high
pressure.
2.4.6
Monitor
Control
Fig.
3.3.2
Low
Pressure
If
the
dome
load
(monitor
motorization)
on
the
active
valve
(1)
exceeds
the
outlet
pressure,
the
piston
(2)
will
move
downward.
This
increases
the
stem
travel
and
allows
the
active
to
compensate
(directly)
for
low
pressure.
High
Pressure
If
the
outlet
pressure
exceeds
the
dome
load,
the
piston
(2)
will
move
upward.
This
results
in
decrease
of
stem
travel
and
allows
the
active
to
compensate
(directly)
for
high
pressure.