Pressure independent control valves
Product types shown: 4
AFQM 2
AFQM 2 is a self-acting flow controller with integrated control valve developed for the use in district heating / cooling systems. The controller prevents flow to exceed set max flow. In a combination with electrical actuators AMV(E) and ECL electronic controllers the flow and temperature can be controlled to achieve highest energy savings.
AFQM 2 has a control valve with adjustable flow limiter, connection neck for electrical actuator and a pressure actuator with one control diaphragm. Controllers are used together with Danfoss electrical actuators:
– AFQM 2 DN 65-250
– AMV(E) 655 without spring return function and with manual operation;
– AMV(E) 658 SD2) spring return function and manual operation;
– AMV(E) 659 SD1) spring return function;
– AMV(E) 55
– AFQM 2 DN 65-125
– AMV(E) 56
1) DIN approved (according to EN 14597)
2) not DIN approved
Main data:
– DN 65-250
– kVS 60-800 m3/h
– Flow range 3.0-500 m3/h
– PN 16, 25, 40
– Differential pressure over the flow control cone ΔpMCV:
– 0.2 bar (standard version) or
– 0.5 bar (high flow version)
– Temperature:
– Circulation water / glycolic water up to 30 %: 2 … 150 °C
– Connections: Flange
AHQM (DN 15-50)
AHQM is a self-acting flow controller with integrated control valve primarily for use in district heating systems or in secondary district heating systems as well. The controller closes when set max. flow is exceeded.
In combination with Danfoss electrical actuators AMV(E) can be controlled by ECL electronic controllers.
The controllers have a control valve with adjustable flow restrictor, connection neck for electrical actuator, and an actuator with one control diaphragm.
Controllers are used together with Danfoss electrical actuators:
- DN 15-32 with
- AMV(E) 10
- AMV(E) 13 with spring return function
- AMV(E) 130, AMV(E) 140
- AMV(E) 130H, AMV(E) 140H with manual operation
- DN 40-50 with
- AMV(E) 435
- AMV(E) 25 SD spring return function (spring down)
AHQM, DN 15-32 combined with AMV(E) 13 has been approved according to DIN EN 14597.
AVQM (PN 16)
AVQM is a self-acting flow controller with integrated control valve developed for the use in district heating / cooling systems. The controller prevents flow to exceed set max flow. In a combination with electrical actuators AMV(E) and ECL electronic controllers the flow and temperature can be controlled to achieve highest energy savings.
AVQM has a control valve with adjustable flow limiter, connection neck for electrical actuator and a pressure actuator with one control diaphragm.
Controllers are used together with Danfoss electrical actuators:
- AMV 150 1)
- AMV(E) 10 1) / AMV(E) 20 / AMV(E) 30
- AMV(E) 13 1) / AMV(E) 23 / AMV(E) 33 with spring return function
- AMV(E) 23 SU (spring up)
- AMV 20 SL / AMV 23 SL / AMV 30 SL with stroke limitation
1) AMV 150 / AMV(E) 10 / AMV(E) 13 can be combined with DN 15 controller only.
AVQM combined with AMV(E) 13, AMV(E) 23 (SL) or AMV(E) 33 (SL) has been approved according to DIN EN 14597.
AVQM (PN 25)
AVQM is a self-acting flow controller with integrated control valve developed for the use in district heating / cooling systems. The controller prevents flow to exceed set max flow. In a combination with electrical actuators AMV(E) and ECL electronic controllers the flow and temperature can be controlled to achieve highest energy savings.
AVQM has a control valve with adjustable flow limiter, connection neck for electrical actuator and a pressure actuator with one control diaphragm.
Controllers are used together with Danfoss electrical actuators:
- AMV 1501)
- AMV(E) 101) / AMV(E) 20 / AMV(E) 30
- AMV(E) 131) / AMV(E) 23 / AMV(E) 33 with spring return function
- AMV(E) 23 SU (spring up)
- AMV 20 SL / AMV 23 SL / AMV 30 SL with stroke limitation
1) AMV 150 / AMV(E) 10 / AMV(E) 13 can be combined with DN 15 controller only.
AVQM combined with AMV(E) 13, AMV(E) 23 (SL) or AMV(E) 33 (SL) has been approved according to DIN EN 14597.
Main data:
- DN 15-50
- kVS 0.4-25 m3/h
- Flow range: 0.015-14 m3/h
- PN 25
- Differential pressure over control valve ΔpMCV: 0.2 bar
- Temperature:
- Circulation water / glycolic water up to 30 %: 2 ... 150 °C
- Connections:
- Ext. thread (weld-on, thread and flangetailpieces)
- Flange