Aalberts hydronic flow control solutions: focus on NexusValve pressure independent control valve

Responsible: ad hoc news Lifestyle & Consumer Desk. Reviewed prior to publication on June 12, 2026 at 12:57:48 PM ET. Details in the imprint.

Aalberts is sharpening its focus on energy efficient building technology with its NexusValve pressure independent control valve line, a hydronic flow control solution designed to balance heating and cooling systems while reducing energy consumption in large commercial properties. Pressure independent control valves (PICVs) automatically keep water flow within a set range even when system pressure fluctuates, which helps maintain stable room temperatures and reduces the need for constant manual balancing. For US facility managers and HVAC designers, the NexusValve portfolio offers a way to modernize hydronic systems without a complete plant redesign, especially in high load buildings such as offices, hospitals, and educational campuses.

How the NexusValve pressure independent control valve works

The NexusValve pressure independent control valve is engineered to combine three functions in one body: control valve, automatic balancing valve, and differential pressure controller. In a typical variable flow hydronic system, differential pressure can vary considerably as pumps ramp up and down and as terminal units open and close; a PICV like NexusValve compensates for these changes internally so that the required design flow is maintained at each coil, provided the pressure remains within its operating range. According to Aalberts hydronic flow control, this design approach simplifies commissioning because the required flow can be set directly at the valve rather than balanced through multiple manual balancing valves along the circuit. As a result, installation time can be reduced, and later tenant fit-outs or load changes are easier to accommodate because individual valves maintain their set flows independently of changes elsewhere in the system.

From a technical standpoint, NexusValve PICVs are available in a range of sizes to match common HVAC terminal units, including fan-coil units, VAV reheat coils, and air handling unit coils in small and medium pipe sizes. The valve body is typically offered in brass or ductile iron depending on size and pressure class, with threaded or flanged connections to fit North American piping standards. Inside the valve, a spring-loaded cartridge regulates flow across a defined differential pressure range, while the control portion of the valve can be actuated by an electric actuator that receives a signal from the building management system’s temperature controller. When the actuator modulates the plug position, the PICV changes the flow through the coil while the internal differential pressure function maintains accurate flow control even when system pressures shift.

One of the main use cases for NexusValve PICVs is in systems designed with variable speed pumping and low temperature differentials, where precise control is essential to maintain comfort and avoid pump inefficiencies. By stabilizing flows at the terminal units, the valves help ensure that return water temperatures stay within the design window, which in turn allows condensing boilers and high efficiency chillers to operate closer to their optimal efficiency points. Aalberts hydronic flow control emphasizes that this performance benefit is most noticeable in large buildings where there are many zones and a high degree of diversity in load; in such projects, uncontrolled differential pressure can lead to some coils being over-supplied while others starve, a problem the PICV concept is meant to solve. For consulting engineers, specifying a PICV-based design can therefore be a way to reduce balancing complaints post-handover and to document a more predictable operating profile for the building owner.

Beyond their technical operation, NexusValve PICVs are designed with practical installation features to suit US contractors. Many models integrate measurement ports so that actual flow can be checked with a portable differential pressure meter, allowing commissioning agents to validate that the valve is delivering the expected flow during start-up. Some versions are offered with union ends or compact bodies to ease retrofits in tight mechanical rooms, where pipe runs are often congested and access for future maintenance is limited. Aalberts hydronic flow control also offers compatible actuators with different control signals such as 2-position, 0-10 V, or floating control, covering a broad range of building automation standards used in North America. For owners planning future digitalization projects, having a standardized actuator portfolio can simplify future upgrades to more advanced control strategies.

Energy efficiency and comfort benefits in commercial buildings

Energy codes and green building certifications are pushing US projects to improve both energy efficiency and indoor comfort, and hydronic balancing is a key part of that effort. Over-pumping and poor flow control can lead to unnecessary energy use at pumps and chillers, as well as hot and cold spots that trigger occupant complaints and manual overrides. Aalberts positions NexusValve PICVs as a way to mitigate these issues by ensuring that each terminal unit receives just the right amount of flow, which can reduce pump head requirements and facilitate lower design safety factors. When pumps can be specified or operated at lower heads, there is a direct reduction in electrical consumption, which can contribute to lower operating costs and easier compliance with performance-based energy codes.

In retrofit projects, the ability to stabilize system behavior without replacing major equipment is especially attractive. Many existing commercial buildings in the US operate with constant speed pumps and rudimentary balancing devices, often resulting in noisy control valves and uneven temperature control as tenants change and space layouts are modified. Replacing or supplementing existing valves with NexusValve pressure independent control valves at key terminal units allows facility managers to gradually move toward a more modern hydronic control strategy while keeping the central plant largely intact. Because the PICV inherently limits maximum flow through each coil, it can also reduce wear on coils and limit excessive return temperatures that would otherwise degrade boiler or chiller efficiency.

Comfort is another critical dimension, especially in office and healthcare environments where temperature stability can influence productivity and patient satisfaction. NexusValve PICVs support better comfort by maintaining consistent coil performance across a wide range of load conditions, which helps avoid the oscillations associated with poorly balanced systems. When combined with smart building controls and high quality thermostats, the result is a more stable room temperature with fewer overshoots and undershoots. Because the valves respond predictably to control signals and are less affected by random pressure spikes, the building management system can use tighter control loops, potentially reducing the need for aggressive tuning and manual adjustments during the first year of operation.

From a maintenance perspective, Aalberts highlights that modern PICVs such as the NexusValve line are designed for long service life and predictable performance. The internal cartridges and seals are engineered for typical hydronic water quality, and the inclusion of strainer options or recommended filtration upstream can further protect the valve internals. In practice, regular maintenance mainly involves checking actuator function and verifying flows at critical points, tasks that can be integrated into annual preventative maintenance programs. For facility teams under pressure to manage large portfolios with limited staff, reducing the need for repeated manual rebalancing is an important operational advantage.

Within Aalberts’ broader portfolio, hydronic flow control plays a strategic role in the company’s focus on mission-critical technologies that improve energy efficiency and reliability in buildings and industrial processes. NexusValve pressure independent control valves are part of this hydronic range, complementing other components such as manifolds, differential pressure controllers, and balancing valves marketed under Aalberts hydronic flow control brands. Shares of Aalberts (NL0000852564, ticker AALBF) were quoted at approximately $63.50 on OTC markets on June 11, 2026.

This article was created with a.i. assistance and editorially reviewed. Product information is provided without warranty; prices and availability may change at any time. Not investment advice, not a buy or sell recommendation. Trading in securities carries risks up to the total loss of capital.