Water distribution pressure control method and apparatus

In one aspect, the prevent invention provides control apparatus for controlling the pressure of a water distribution system. Typically the apparatus will be connected to a main pressure reducing valve in the system, which main valve is under the control of a dual diaphragm pilot valve. The control a...

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Bibliographic Details
Main Author CLAUDE YONNET
Format Patent
LanguageEnglish
Published 28.05.2003
Edition7
Subjects
CONTROLLING
PHYSICS
REGULATING
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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Summary:In one aspect, the prevent invention provides control apparatus for controlling the pressure of a water distribution system. Typically the apparatus will be connected to a main pressure reducing valve in the system, which main valve is under the control of a dual diaphragm pilot valve. The control apparatus includes variable gas pressure output pipes which, in one embodiment, are connected to the pilot valve. There is also provided a relatively high gas pressure source and a relatively low gas pressure source, each of which are selectively connectable to the variable gas pressure output means in order to vary the pressure of the variable gas pressure source.
Bibliography:Application Number: ZA20020001657