Flow Control Valve IM-QP3B

The IM-QP3B flow control valve is an automatic regulating valve designed to limit the flow to a preset maximum value. This valve is ideal for applications requiring precise control of water flow, ensuring that the flow does not exceed a predefined limit.

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 control)

Operating Principle:

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