Control valve IM-QP3B

regulatingirrigationhydraulic

The IM-QP3B flow control valve is an automatic regulating valve designed to limit the flow to a preset maximum value, providing precise control of water flow to prevent exceedance of predefined limits in irrigation and waterworks systems.

Operating principle:
The valve is controlled by a 3-way hydraulic differential pilot (Model QP3B), which adjusts the diaphragm opening based on the instantaneous flow rate. The pilot fills or discharges the valve chamber depending on the differential pressure generated by water passing through a calibrated orifice. The orifice diameter determines the maximum flow rate to be limited, while the pilot allows fine tuning. When flow demand exceeds the set limit the pilot partially closes the valve to restore the predefined flow rate; when demand falls below the limit the valve fully opens.

Features / Technical specifications:

• Pilot Model: QP3B
• Nominal Pressure (PN): PN16
• Flow regulation range:
  • Spring: 2.0 ÷ 15.0 m.w.c.
• Materials:
  • Pilot body: Brass
  • Cover: Brass
  • Fittings: Teflon
  • Ball: Stainless steel
• Connections:
  • Body: 5 x Ø1/8" F
  • Manual control: Ø1/4" M BSP (body), Ø1/8" F BSP (Open/Close/Auto)