The Belimo Pressure Independent Flow Limited Valve (PIFLV) offers all the advantages of the ZoneTight QCV series with the addition of an integrated flow limiter. The valve performs the function of a dynamic balancing valve and a control valve in one unit. Therefore, the flow characteristic and operation of the valve is not distorted in the system. The PIFLV is designed for on/off applications to regulate fl ow through air handlers, heating and cooling coils, fan coil units, unit ventilators and VAV re-heat coils.