EXCESS FLOW VALVE E2117-00
- 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.