control valve setting-water distribution system.
can we change a setup value of the control valve automatically? by using solenoid control?
for
example, I have a pressure sustaining valve, I want the setting change
by time, like, from 0-4am, the setting is 80 psi, 4-8am, the setting is
70 psi, 8am-12pm, the setting is 60 psi.
In your other post, you mention Bermad, so I assume your using generic
hydraulic control valves. You can change setting using solenoids to
select different pilot valves. You will need one pilot for each pressure
setting and one solenoid upstream of each.
Steve
You do not mention dimension of pipeline or flow requirements. A
second alternative would be to have an electric operated control valve,
for instance needle valve type to cover a widest possible range of
situations, have a 4-20mA or similar pressure meter far downstream and
regulate the regulating valve with at best continous 4-20mA signal in
and out compared to downstream pressure.
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