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AFQM/AFQM 6 Flow Controller with Integrated Control Valve

Brand: Danfoss

AFQM(6) is a self-acting flow controller with integrated control valve with full authority, primarily for use in district heating systems. 

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 AFQM (6) is pressure independent which means that the control characteristic is independent from the available pressure and is not influenced by a low authority. 

The controller has a control valve with adjustable flow restrictor, connection neck for electrical actuator and an actuator with one control diaphragm. Further on control valve can be:
  • Not Pressure Relieved (AFQM 6 DN 40-50) 
  • Pressure Relieved (AFQM DN 65-250)

Specifications

Brand

Cone Material

  • 316 Stainless Steel - Valve
  • 420 Stainless Steel - Valve

Diaphragm Material

  • EPDM (Rolling, Fibre Enforced)

Differential Pressure

  • psi: 232.1 to 290.1 (kPa: 1,600 to 2,000, bar: 16 to 20) - Max.

Enclosure, Body Material

  • 1008 Stainless Steel
  • Ductile Cast Iron EN-GJS-400-18-LT (GGG-40.3) - Valve
  • Grey Cast Iron EN-GJL-250 (GG-25) - Valve

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - PN 16
  • 1-1/2” (DN 40) - PN 25

Flange Size - 10” (DN 250)

  • 10” (DN 250) - PN 16

Flange Size - 2-1/2” (DN 65)

  • 2-1/2” (DN 65) - PN 16
  • 2-1/2” (DN 65) - PN 25

Flange Size - 2” (DN 50)

  • 2” (DN 50) - PN 16
  • 2” (DN 50) - PN 25

Flange Size - 3” (DN 80)

  • 3” (DN 80) - PN 16
  • 3” (DN 80) - PN 25

Flange Size - 4” (DN 100)

  • 4” (DN 100) - PN 16
  • 4” (DN 100) - PN 25

Flange Size - 5” (DN 125)

  • 5” (DN 125) - PN 16
  • 5” (DN 125) - PN 25

Flange Size - 6” (DN 150)

  • 6” (DN 150) - PN 16

Flange Size - 8” (DN 200)

  • 8” (DN 200) - PN 16

Flow Rate

  • 1.29 to 247.2 scfm (2.2 to 420 m³/hour)

Materials of Construction

  • 316Ti Stainless Steel - Bellows
  • Piston
  • Stainless Steel Tube Ø 10 x 0.8 mm - Impulse Tube

Measuring Range

  • pH: 7 to 10 - Medium PH

Media

  • Circulation Water
  • Glycolic Water up to 30 %

Nominal Pressure

  • psi: 232.1 to 362.6 (kPa: 1,600 to 2,500, bar: 16 to 25)

Operating Pressure

  • psi: 362.6 (kPa: 2,500, bar: 25)

Process Temperature

  • 2° to 150° C (35.6° to 302° F)

Seat / Seal Material

  • 420 Stainless Steel - Valve
  • EPDM - Sealing DP
  • Metal - Sealing CV
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