Electronic Pressure Independent Valve Information

Pressure Independent Valve Innovations For The Design Of Tomorrow… Today!

  • Pressure independent valves compensate for pressure variations, performing a continual balancing function to maintain system performance at varying loads.
  • Precise flow control eliminates over-pumping and provides favorable energy savings.
  • Equal percentage flow characteristics leads to system controllability.
  • Linear flow is used when controlling applications different than cooling/heating coils; like bypass control.
  • Pressure independent valve prevent energizing additional chillers by maintaining desirable Delta T.
  • Constant flow performance signifi cantly reduces actuator movement, providing less hunting and wear on the valve assembly.
  • Pressure independent valves are selected based on coil flow rate and no Cv calculations are needed.

The ePIV is a two-way valve which is unaffected by pressure variations in a system. The ePIV directly measures fl ow by combining a magnetic fl ow meter and a 2-way control valve. The actuator has a powerful algorithm that modulates the control valve to maintain the fl ow setpoint set by the controller. The flow reading is reported back to the controller using a standard signal, and this value can be used by the Building Automation System to perform advanced control and energy strategies. The ePIV is a valve designed specifi cally for HVAC applications. The ePIV complements the existing line of Pressure Independent Characterized Control Valve (PICCV) to offer a complete range of pressure independent valves.

Features and Benefits

  • Simplified valve sizing and selection, no Cv calculations required.
  • Real flow measured and provided as feedback using a standard signal (0-10 VDC) providing high stability across the whole load range.
  • Constant flow performance signifi cantly reduces actuator movement, providing less hunting and wear on the valve assembly
  • Magnetic flow sensor, no maintenance required and no moving parts.
  • Accuracy is not affected by temperature or media, up to 50% glycol.
  • The flow characteristic can be changed from equal

Further Information