What is PICV? Pressure-independent balancing valve

PICV — pressure-independent balancing and regulating valve. As the name suggests, it performs two functions in a single body: it balances the circuit and regulates the flow.

The problem with a conventional regulating valve is that even if the actuator brings the valve to 50%, the amount of water passing through changes when the pressure difference in the system changes. In other words, "50% open" does not necessarily mean "half of the design flow." The pressure regulator inside the PICV eliminates this dependency — regardless of the actuator's position, the flow remains proportional.

Practical results: the need to adjust each circuit individually decreases, room temperature becomes more stable, and pump energy is not wasted. Therefore, it is widely used in multi-circuit fan-coil systems and in the batteries of air handling units (AHU).

In our catalog, the resilient PICV ranges from DN15 to DN50, and the flanged version ranges from DN50 to DN300; working pressure is PN16/PN25, and working temperature is −10 °C / +120 °C. Internal components and shafts are made of stainless steel or DZR brass, while the body is made of pressed brass (in smaller sizes) or ductile cast iron (in larger sizes).

What is PICV and when is it needed?

Get a price quote for your project

Get a quote for your project