Multifunctional automatic valve AB-QM with measuring connections and flanged connection, size DN 80 003Z0774

Multifunctional automatic valve – precise regulation and flow control

The AB-QM valve is a versatile device designed for precise flow regulation in central heating and cooling systems. Its design combines the functions of an automatic flow regulator with a maximum value limiter, which translates into optimal system performance and user comfort. The valve is characterized by a linear control characteristic, which means it maintains stability regardless of pressure changes in the installation.

The AB-QM valve is compatible with both ON/OFF and modulating actuators, providing great flexibility in choosing the right solution for specific needs. Made of cast iron GG 25 (GJL-250), it ensures durability and corrosion resistance. The possibility of using it in installations with glycol expands its range of applications. Additional measuring ports facilitate monitoring of installation operating parameters.

Construction and application

The AB-QM valve with a nominal diameter of DN 80 has a flanged connection with an outer pipe diameter of 88.9 mm. Its mechanical pressure compensation ensures stable operation even under variable hydraulic conditions. Thanks to the ability to set the maximum flow rate (11.2 – 28 m³/h), its operation can be adapted to the performance of end devices, protecting them from overload. The minimum differential pressure at 30 kPa guarantees correct valve operation under various installation conditions, and the maximum differential pressure is 600 kPa. The valve stroke length is 15 mm, and its working length is 310 mm with a height of 402 mm.

These valves are used in both variable flow and constant flow installations, providing full control of thermal comfort in rooms. They are ideal for systems requiring precise flow regulation and limitation of its maximum value, which translates into energy savings and extended device life.