DANFOSS Danfoss AB-QM 4.0 Flexo 80 DN20 Connection Set DN20, 110-1100l/h – 003Z1623

Danfoss Flexible Connection Set AB-QM 4.0 Flexo
A compact connection set as an 8-in-1 PICV solution for control, hydraulic balancing, time-saving installation, easy measurement,
flushing, filling, draining and maintenance of e.g. fan coils, air handling units, ventilation units, chilled beams, etc. with a pressure-independent
balancing and control valve AB-QM 4.0 (PICV) for optimal hydraulic balancing and control with variable flow, to avoid
oversupply and increase efficiency.
The connection set has the following features:
- consisting of the components: pressure-independent balancing and control valve (PICV), H-piece valve body, test nipple for flow
and differential pressure measurement, dirt trap with drain, manual shut-off valves
- bypass line for separate filling, draining, as well as forward and reverse flushing of the system on the consumer side (e.g. fan coil)
by appropriate shut-off of the ball valves
- extended handles on the shut-off ball valves to allow commissioning and maintenance with insulation installed
- shut-off bypass
- pressure rating PN25, factory leakage tested
- form-fitting EPP shell as compact pre-insulation
- Flexible stainless steel connection hoses as accessories
The integrated pressure-independent balancing and control valve AB-QM 4.0 (PICV) with the following features:
- Flow limiting function
- Modulates the flow via an actuator, regardless of the setting below 1% of the set flow
- Linear control characteristic independent of available pressure and flow setting
- consistently highest valve authority of 1 (100%) at all settings
- closing pressure 16 bar with closed valve
- setting scale in percent of flow
- turndown ratio 1:1000
- leakage rate Class IV (according to IEC 60534-4:2007)
- contamination-resistant valve design due to polymer cone
- test nipple for pump optimization and flow measurement
- change of the control characteristic of the valve from linear to equal-percentage characteristic for all sizes by setting the actuators
(Danfoss AME, NovoCon series)
Medium temperature: -10 to 95 C, nominal pressure: PN25, center distance: 80mm, connection: internal thread Rp 3/4 according to ISO 7/1,
setting range 110-1100 l/h

Brand: Danfoss
Type: AB-QM 4.0 Flexo DN20
Order no. 003Z1623