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  • DN 50-700
  • PN 10-16-25


This valve is fitted with an orifice plate, mounted in the inlet flange.
The unit closes and locks automatically as soon as the rate of flow reaches
a predetermined excess flow level. A progressive surge-free closure rate is 
achieved using independent opening and closing speed adjustement.
The valve is equipped with two pressure intakes, facilitating easy setting of
excess flow rates on site, using a differential pressure gauge (not supplied).
Standard range of pilot valve: 0.2 - 1.0 bar (pressure losses on the orifice plate).

Any flow rate, whose velocity falls between 1.0 m/s and 4.3 m/s - measured in
the inlet section of the main valve-can activate the excess flow pilot valve, 
providing the corresponding pressure drop in the orifice plate remains in range.

Applications: Water Hydro Irrigation Industry