Pressure Independent Balancing & Control Valve
Published by : Industrial Automation
Danfoss has introduced AB-QM 4.0 – Pressure Independent balancing and Control Valve (PICV) for smart buildings
After 15 very years of successful collaboration we are starting to say goodbye to one of our most acknowledged products in HVAC heating and cooling systems, the AB-QM Pressure Independent balancing and Control Valve (PICV).
AB-QM and its pressure independent functionality totally changed the market of hydronic balancing and control valves for terminal units in non-residential buildings.
Danfoss has launched AB-QM 4.0, a successor to the popular AB-QM Pressure Independent balancing and Control Valve (PICV). The new PICV comes with re-defined value for HVAC designers, building owners and building users. The valves are designed for use in combination with conventional actuators or the Danfoss NovoCon® S digital actuator. In particular, they enable HVAC 4.0 solutions in smart commercial buildings concepts such as hotels or offices
100% valve authority
The new Danfoss AB-QM 4.0 valves are designed in sizes from DN15 to 32 and add new features and improved specifications to the proven capabilities of the well-known AB-QM series. The unique 100% valve authority, achieved by a built-in differential pressure controller, remains unchanged. This ensures the accurate control performance of the valves. Several significant changes and improvements have been implemented, making it a whole new valve rather than an upgrade.
Most remarkable is the re-design of the inner construction. By using innovative PPSU Polymer material the resistance of the valve to scaling and clogging has been considerably improved compared to any other HVAC control valve. Intensive testing proofs continued stability of the flow characteristics and accurate control performance, also after years of use.
The pressure class has been increased from PN16 to PN25 while the required differential pressure continues to be just 16 kPa.