Excess flow valve

Product Overview
Excess flow valve are utilized on hydroelectric and irrigation plants and waterworks.The valve is also equipped with a 3 ways excess flow control pilot that: limit the damages caused by water excess velocity either in pipelines;
following a pipe fracture due to crumbling movements or earthquakes or pipes failure due to over pressure.
The valve is controlled by the action of a 3 ways differential pilot (with manual reset) connected with an orifice plate installed in the outlet flange. When the rate of flow is higher than the set pilot value, the pilot switch off and the main valve goes, with a controlled speed towards closed position until drop tight. The valve is equipped with two gauge holder valve for a differential manometer (not included), facilitating easy setting of the rate of flow. The standard operating range means a differential produced by the orifice plate included in 0,2 up to 0,5 bar. According to the flow rate requested for the intervention, a properly orifice will be calculated

Additional features
– Solenoid on – off control function. A remote control switch on/off the valve;
– Pressure reducing function;
– Maximum inlet pressure surge control.