Danfoss AB-QM 4.0

Categories Meters, Meters - Danfoss/Sondex, Pressure Independent Control Valves (PICV)

Danfoss AB-QM 4.0

The Danfoss AB-QM 4.0 is the next-generation PICV in the AB-QM series. It retains full 100 % valve authority and automatic balancing, while offering improved design: clogging- and scaling-resistant construction, flow setting from 10-100 %, and compatibility with smart actuators for digital integration. Ideal for heating & cooling systems in modern buildings

Product Description

Key Features & Benefits

Clogging & Scaling Resistant
Special polymer internal construction ensures reliable, long-term performance in all water qualities.
Best-in-Class Control
Maintains 100% valve authority for precise flow control from 10-100% of setting, ensuring optimal comfort and efficiency.
Ready for Smart Buildings
Compatible with NovoCon S digital actuator for plug-and-play BMS integration (BACnet/Modbus), enabling remote commissioning and data collection.
Higher Flow Range & Visible Setting
Broad flow range up to 5000 l/h. Scale remains visible even with actuator mounted, and flow can be measured via Bluetooth (PFM 1000 tool).
Lower Total Cost of Ownership
Reduces installation, commissioning, and energy costs, providing faster project handover and higher ROI.

Technical Specifications

Size Range

DN15 – DN32

Flow Range

20 – 5000 l/h (across Low/Normal/High flow variants)

Pressure Rating

PN25

Connection Types

Internal or External thread

Options

With or without test plugs

AB-QM 4.0 Product Versions

Product Name	Type	Description	Primary Application
AB-QM 4.0 (Standard Valve)	Core Valve	The main PICV valve sold individually for standard installations.	Universal – FCUs, AHUs, Radiant Systems
AB-QM 4.0 Flexo for FCUs	Pre-assembled Kit	8-in-1 connection set includes: AB-QM 4.0 valve, ball valves, strainer, drain valve, test plugs. Pre-tested for fast FCU installation.	Fan Coil Units (FCUs)
AB-QM 4.0 CO6 Flexo for Radiant Panels	Pre-assembled Kit	Complete changeover set for 4-pipe systems. Includes AB-QM 4.0 & ChangeOver6 valve in compact, pre-tested unit (125mm height).	Radiant Panels / Chilled Beams