-No external power, energy is received from the water flowing through the pipe.
-Simplicity of design, construction and operation.
The metal valve is an online hydraulic diaphragm valve with simple camera, with a basic operation of opening and closing due to the pressure of the existing water in the control chamber.
The position of the main valve is controlled by manipulating 3 ways selection valve which opens or closes the flow of water through the main valve.
Underground installed system, with a manual selection valve on the surface, for a comfortable handling of the valve.