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PICV dynamic balancing valves
PICV (Pressure Independent Control Valves, that is control valves independent of the differential pressure) are dynamic balancing valves which, thanks to a membrane device with contrast spring, are able to maintain the flow rate constant within a certain differential pressure range.
These devices consist of a valve body to which an insert of choice can be combined according to the type of operation and work conditions required (flow rate, differential pressure). There are three types of inserts:
PICC 01/11. This insert offers the opportunity to pre-calibrate the flow rate up to the 8 values/positions available and allows stabilisation, also in case of changes in pressure.
PICC 02/12/22. Using a special key, on each insert you can select a position/flow rate among 41 available. The advantage compared to PICC 01/11 is the option to vary the calibration position directly from the outside and with the system running.
PICC 03/13. This insert has similar features to the previous one, in other words the flow rate stabilisation and the possibility of selecting between 41 different flow rate positions, but it also allows application of an on/off or 0-10V axial actuator. In this way, you can provide the interception of the valve, but also, and above all, the independent modulation of the flow rate with respect to the differential pressure.
In order to complete balancing valves range, IVAR has introduced PICV 300 with brass body and preset cartridge (diameter from 2”1/2 to 3”) and PICV XL, made in cast iron (diameter from 2”1/2 to 6”), which can be controlled manually or by an actuator.
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