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
  ​​​​​​​  ​​​​​​​– k_VS 60-800 m³/h
  ​​​​​​​  ​​​​​​​– Flow range 3.0-500 m³/h
  ​​​​​​​  ​​​​​​​– PN 16, 25, 40
  ​​​​​​​  ​​​​​​​– Differential pressure over the flow control cone Δp_MCV:
   ​​​​​​​  ​​​​​​​  – 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