AFQMP 2

AFQMP 2 is a self-acting flow controller with integrated control valve and with pressure actuator with adjustable spring, developed for the use in district heating / cooling systems. The controller prevents flow to exceed set max flow. Pressure actuator with adjustable spring enables adjustment of differential pressure over the control cone from 0.1 to 1 bar. Increased flows can be provided. In a combination with electrical actuators AMV(E) and ECL electronic controllers the flow and temperature can be controlled to achieve highest energy savings.

AFQMP 2 has a control valve with adjustable flow limiter, connection neck for electrical actuator and a pressure actuator with one control diaphrag.

Controllers are used together with Danfoss electrical actuators:

• AFQMP 2 PN 16/25/40 DN 65-250
  

  - AMV(E) 655 without spring return function and with manual operation;
  - AMV(E) 658 SD ²⁾ spring return function and manual operation;
  - AMV(E) 659 SD ¹⁾ spring return function;
  - AMV(E) 55

• AFQMP 2 PN 16/25/40 DN 65-125
  

  - AMV(E) 56
¹⁾ DIN approved (according to EN 14597)
²⁾ not DIN approved

Together with Danfoss intelligent electrical actuator AMEi 6 intelligent optimization functions are available:
∙ iSET-intelligent substation efficiency optimization
∙ iNET-intelligent pump optimization
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Main data:

• DN 65-250
  
• k_VS 60-800 m³/h
  
• Flow range 4.2-630 m³/h
  
• PN 16, 25, 40
  
• Differential pressure over the flow control cone Δp_CV:
  

  0.1-1 bar (adjustable by the spring)

• Temperature:
  

  ​​​​​​​- Circulation water / glycolic water up to 30 %: 2 … 150°C

• Connections: Flange
  
• AFQMP 2 combined with AMV(E) 659 SD have been DIN approved according to EN 14597.