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Johnson Controls extends VP140 Series of Pressure Independent Control Valves
System delivers correct pressure flow under varying load conditions
MILWAUKEE – (Aug. 5, 2019) – Johnson
Controls announces a new addition to its line of pressure independent
valves that deliver stable temperature flow regardless of pressure
fluctuations. The new compact VP140 Pressure Independent Control Valves
(PICVs) provide a small footprint valve with robust performance.
Its patented cartridge is designed for maximum resistance to dirty
water, ensuring performance does not degrade, even in less than ideal
Traditional systems are balanced at full-flow positions; however, under actual conditions, pressure dynamics often result in either too much or not enough flow through the coils, even though the valve position did not change. Compared to a pressure dependent valve, the automatic balancing action of the PICV regulates pressure to reduce temperature fluctuations caused by changing load conditions in other areas (zones) of the building. This reduces pumping requirements and lowers demand on the heating or cooling system.
Including a PICV also helps simplify
specification. Valves are selected based on the design flow rate of the
coil, eliminating the need for sizing based on Cv calculations. PICVs
provide the appropriate flow given the load requirement of the coil,
which is determined by the actuator position and not the pressure
differential seen by the valve. The PICV also reduces installation and
upfront equipment costs by enabling the right-sizing of equipment
within the HVAC system.
The PICV combines the function of a control valve, pressure balancing valve and regulating valve into a single valve, eliminating the need for intensive system balancing, while providing the right flow, at the right time. As additional zones are added, the system can be commissioned zone-by-zone, reducing lifecycle costs by minimizing re-commissioning expense.
For more information on the VP140 Series of Pressure Independent Control Valves, visit https://www.johnsoncontrols.com/building-automation-and-controls/hvac-controls/valves-and-actuators.
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