HERZ Pressure-independent 6-way
control ball valve

Precise and simple control

Heating and cooling are not only used in combination in new buildings, but are also popular in refurbishments to meet the individual needs of users. The HERZ pressure-independent 6-way characterised control valve takes the control of heating and cooling ceilings and fan coils in 4-pipe systems to a new level. The product ensures precise control of the heating and cooling functions in systems and, thanks to the integrated differential pressure controller, enables efficient adaptation to the different needs of end users. The versatile control valve, which also functions as a changeover valve, offers practical benefits for installers, has a positive effect on energy efficiency and also saves costs.

A ball valve with several functions

HERZ pressure-independent 6-way control ball valve is a combination of a 6-way valve, regulating ball valve and pressure-independent control valve in a single unit. This combination enables the product to function as a control valve as well as a changeover valve. The automatic changeover depending on the selected function ensures that heating and cooling are seamlessly and effectively combined to maximise comfort in buildings. For installers, this means a more efficient installation with fewer components and a smaller footprint. From a technical perspective, precise flow control allows for optimal energy utilisation, leading to a potential reduction in operating costs.

Installing a HERZ pressure-independent 6-way characterised control valve reduces the number of valves required to switch and regulate the system. With a 90° turn of a rotary actuator, both the heating/cooling changeover and the regulation of the heating side and the cooling side can be carried out. The integrated differential pressure controller keeps the differential pressure constant via the control valve. The internal safety function prevents unintentional pressure rises, which further increases the reliability of the system. Regardless of changes in the system differential pressure, the same set flow rate always flows through the control ball valve. The flow rate can be regulated by intermediate positions. HERZ pressure-independent 6-way characterised control valve will be available in sizes DN 15 - DN 20 from autumn 2024.

Advantages:

• For controlling, regulating and shutting off consumers in 4-pipe systems
• Pressure-relieved for small torsional forces
• Pressure-independent - The integrated differential pressure controller keeps the differential pressure constant via the control valve
• Developed in Austria, produced at European HERZ Group sites

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