Irrigation IOM
Sensors
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The design of the vent valve is essential to ensure that the entrapped air pockets are released.
Pneumatic valves or vacuum switches should be avoided. Instead, it is preferable to use combined pneumatic
valves that incorporate an automatic orifice, as well as a large kinetic orifice. These valves ensure that the largest
volumes of air are released quickly and eectively while filling the pipe.
Fig. 42 Typical combined air vent valve, designed with automatic and kinetic air release functions
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