Electronic Pressure Independent Valve

http://www.belimo.us/americas/zonetight.html 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 flow setpoint set by the controller. The fl ow 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.