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AHQM Flow Controller with Integrated Control Valve
Brand: Danfoss
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 maximum 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.
Specifications
Brand
Actuator Size
- 8.5 to 64 cm²
Applications
- Flow Controller
- Return Mounting
BSP Connection
- G 1” A Male
- G 1-1/4” A Male
- G 1-3/4” A Male
- G 2” A Male
- G 2-1/2” A Male
- G 3/4” A Male
Cone Material
- Valve (Control Valve): DZR CW602N (CuZn36Pb2As) (Thread, Flange)
- Valve (Differential Pressure Controller): 303 Stainless Steel (Flange)
- Valve (Differential Pressure Controller, Control Valve): 316 Stainless Steel (Thread, Flange)
Control Functions Characteristics
- Linear
Diaphragm Material
- Actuator: EPDM
Differential Pressure
- psi: 58.02 (kPa: 400, bar: 4) - Max.
Enclosure, Body Material
- Valve (Thread), Actuator: DZR CW602N (CuZn36Pb2As)
- Valve (Thread, Flange), Actuator: Grey Cast Iron EN-GJL-250 (GG-25)
Flange Size - 1-1/2” (DN 40)
- 1-1/2” (DN 40) - PN 16
Flange Size - 1-1/4” (DN 32)
- 1-1/4” (DN 32) - PN 16
Flange Size - 1” (DN 25)
- 1” (DN 25) - PN 16
Flange Size - 1/2” (DN 15)
- 1/2” (DN 15) - PN 16
Flange Size - 2-1/2” (DN 65)
- 2-1/2” (DN 65) - PN 16
Flange Size - 2” (DN 50)
- 2” (DN 50) - PN 16
Flange Size - 3” (DN 80)
- 3” (DN 80) - PN 16
Flange Size - 3/4” (DN 20)
- 3/4” (DN 20) - PN 16
Flange Size - 4” (DN 100)
- 4” (DN 100) - PN 16
Flow Rate
- 0.02 to 52.97 scfm (0.035 to 90 m³/hour)
Media
- Circulation Water, Glycolic Water up to 30 %, pH: 7 to 10
Mounting Position
- DN 15-32: Vertical
- Horizontal
Nominal Pressure
- psi: 232.1 (bar: 16, kPa: 1,600)
Process Temperature
- 2° to 120° C (35° to 248° F)
Seat / Seal Material
- Sealing (Differential Pressure Controller, Control Valve): EPDM
- Sealing Control Valve: Metal
- Seat (Differential Pressure Controller, Control Valve): 303 Stainless Steel
- Seat (Differential Pressure Controller, Control Valve): 316 Stainless Steel
- Seat (Thread): DZR CW602N (CuZn36Pb2As)
- Return Mounting
- Flow Controller
