Danfoss AB-QM 4.0 Flexo DN 15 Pressure Indepenent Balancing & Control Valve with Test Plugs - Left Hand Version - 003Z1631

Danfoss AB-QM 4.0 Flexo Datasheet

Danfoss AB-QM 4.0 Flexo with AB-QM valve, 3-way ball valve design, and 80 mm center distance is a compact and time-saving connection set. It’s designed for creating optimal hydronic balance in cooling and heating applications with the variable flow (such as fan coil units (FCU) or chilled beams). Flow is controlled by the AB-QM pressure independent control valve to avoid overflow and reduced efficiency of the thermal unit.

Features & benefits

Installation:

• Saving time and space (pre-assembled design)
• Reduced installation time
• Easy setting and sizing, 100% authority and perfect control (available in left-hand and right-hand version)
• Trouble-free installations (compact and space saving installation; pressure tested from factory - nominal pressure PN25)

Service (enable fast servicing, maintenance and troubleshooting):

• Easy flushing
• Easy draining
• Easy bypass
• Easy cleaning of filter
• Enables pressure and flow validation

Energy efficiency:

• Pressure independent flow control with AB-QM 4.0 Improved indoor comfort with best performance and energy savings. Efficient energy transfer and minimal pumping costs.

Applications

AB-QM 4.0 Flexo is a pre-assembled, pressure-tested set used for terminal units, such as FCU (Fan Coil Unit). The Danfoss AB-QM 4.0 Flexo solution comprises an H-body (with integrated shut-off valves & the possibility to mount measuring plugs), strainer, drain, and associated Danfoss AB-QM 4.0 pressure independent control valve.

The AB-QM ensures and controls the required flow on every terminal unit and maintains Hydronic balance in the system. The control valve has 100% authority and therefore ensures the stability of control. At partial load, there is no overflow, contrary to conventional solutions, because the AB-QM will always limit the flow to what is needed. By installing the AB-QM the whole system is divided into independent control loops.

There is a wide range of Danfoss actuators available for the AB-QM 4.0, suitable for every control need. Actuators1) are available as On/Off, 0-10 Volt, 4-20 mA, and digital via field bus.