Belimo expanded its 2” Electronic Pressure Independent Valve (ePIV) offering to include five new factory-set flow models from 80GPM to 100GPM. To achieve these new flow settings the specification for operating differential pressure range is 8–50psid and media temperature range is 4°C to 120°C. For these models, the field-set maximum flow is adjustable from 30GPM to 100GPM, in 1GPM increments, with the ZTH US hand held tool or PC Tool.
The ePIV is a 2-way pressure independent characterised control valve with an integrated electronic flow meter and a powerful control algorithm. The ePIV maintains flow set point regardless of differential pressure variations. It achieves this with its powerful algorithm that modulates the valve based on its measured True Flow. The ePIV compensates for pressure variations and perform dynamic balancing to maintain system performance at varying loads. The valves are selected based on coil flow rate. No Cv calculations are needed. Valves maintain pressure independent operation down to 1psid.
Unlike mechanical pressure independent valves that provide an approximated/calculated flow feedback, the built-in electronic flow meter provides True Flow as a feedback to BAS systems. Built-in CCV technology with high close-off pressure and zero leakage eliminates ‘ghost energy’ losses in the system.