The Automatic Control Valve, the word is self explanatory. It is a highly engineered Automatic Control Valve knowledgeably designed to operate off line pressure or if desired, from an independent power source. Actrol valves are hydraulically operated, diaphragm actuated for multi-function control of non corrosive, non abrasive fluids.
Size Range: 25mm to 400mm
Pressure Rating: Class 150 & 300
Main Valve Design
The main valve is Self Actuating Type, Pilot Operated, Globe/Angle Pattern, Top & Bottom Guided, Glandless, Hydraulically Operated, Diaphragm Actuated for multifunction control of less viscous, non corrosive, non abbrasive fluids.Our wide range of control pilots makes it possible to offer combination models for variety of functions. The main valve contain only one moving part. This simplicity of design promotes dependibility, making the maintenance easier and extend the life of the valve.
The lower portion of main valve diaphragm assembly is a mechanical check feature, which acts independently of diaphragm position or pilot control system, and provide immediate check action when flow ceases.
Main Valve Construction
The main valve consist only three major components; Body, Cover and the Top & Bottom Guided Diaphragm Assembly which is the only moving parts in the main valve making the online maintanence very easy.With simplicity of design & packless construction, minimal part wear is there which assure trouble free operation & long life of dependable.
Actrol is available in various materials and in full range of sizes with either threaded or flanged ends.
Main Valve Operating Principle
The main valve is normally closed, when pressure is applied to the valve inlet the same pressure is applied to the bonnet also (upper chamber) the valve remains close. By controlling the pressure in the bonnet the valve can be made fully open or closed.- Full Open
When pressure in the cover chamber is released to a lower pressure zone the line pressure at the valve inlet opens the valve allowing full flow.
- Tight Closing
When the pressure from the valve inlet is applied to the cover chamber, the valve closes drip tight.
- Modulating Action
Actrol valves are hydraulically operated ,by introducing or releasing the liquid from above the diaphragm at controlled rates. A pressure differential is required , either inlet to outlet or inlet to atmosphere, depending on application.
The control valve holds any intermediate position when operating pressures are equal above and below the diaphragm. The control pilot modulates the valve to automatically compensate for line pressure changes.
Selection
Valves are sized to provide an appropriate pressure drop for each application. The minimum pressure drop should be 5 psi for inlet to atmosphere and 10 psi from inlet to outlet.Actrol valves are design for use with clean liquid (water, ATF) application for other media is possible, consult factory.
Actrol is a single chamber full port engineered basic valve used in nearly all Brightech's model bearing its description. when the main valve is provided with different combination of pilot & accesories the valve perform a wide range of Automatic Fluid Control making it a specified valve for the Municipal Water Works, Water Distribution System, Fire Protection, Irrigation, Industrial Petroleum & Aviation Fueling System, Marine Theme Park, Decorative Fountain etc. for the system application like Remore Control, Pressure Regulation, Solenoid Operation, Rate of Flow Control, Liquid Level Control, Check Function and many more.