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AVPQ Differential Pressure & Flow Controller
Brand: Danfoss
AVPQ is a self-acting differential pressure and flow controller primarily for use in district heating systems. The controller closes on rising differential pressure or when set max. flow is exceeded.
The controller has a control valve with adjustable flow restrictor, an actuator with two control diaphragms and handle for differential pressure setting (fixed setting version is without handle).
1 - 12 of 13 Part Numbers
003H64
- Flow Rate / Size - 1.6 m³/hour / DN 15
- Setting Range - bar: 0.1 to 0.5
003H6477
- Flow Rate / Size - 1.6 m³/hour / DN 15
- Connection - G 3/4" A
- Setting Range - bar: 0.1 to 0.5
003H6478
- Flow Rate / Size - 2.5 m³/hour / DN 15
- Connection - G 3/4" A
- Setting Range - bar: 0.1 to 0.5
003H6479
- Flow Rate / Size - 4 m³/hour / DN 15
- Connection - G 3/4" A
- Setting Range - bar: 0.1 to 0.5
003H6480
- Flow Rate / Size - 6.3 m³/hour / DN 20
- Connection - G 1" A
- Setting Range - bar: 0.1 to 0.5
003H6481
- Flow Rate / Size - 8 m³/hour / DN 25
- Connection - G1-1/4" A
- Setting Range - bar: 0.1 to 0.5
003H6482
- Flow Rate / Size - 10 m³/hour / DN 32
- Connection - G 1-3/4" A
- Setting Range - bar: 0.1 to 0.5
003H6483
- Flow Rate / Size - 1.6 m³/hour / DN 15
- Connection - G 3/4" A
- Setting Range - bar: 0.2 to 1
003H6484
- Flow Rate / Size - 2.5 m³/hour / DN 15
- Connection - G 3/4" A
- Setting Range - bar: 0.2 to 1
003H6485
- Flow Rate / Size - 4 m³/hour / DN 15
- Connection - G 3/4" A
- Setting Range - bar: 0.2 to 1
003H6486
- Flow Rate / Size - 6.3 m³/hour / DN 20
- Connection - G 1" A
- Setting Range - bar: 0.2 to 1
003H6487
- Flow Rate / Size - 8 m³/hour / DN 25
- Connection - G1-1/4" A
- Setting Range - bar: 0.2 to 1
1 - 12 of 13 Part Numbers
Specifications
Brand
Actuator Size
- 6 in² (39 cm²)
BSP Connection
- G 1” A
- G 1-1/4” A
- G 1-3/4” A
- G 3/4” A
Cone Material
- Dezincing Free Brass CuZn36Pb2As - Valve
Diaphragm Material
- EPDM
Differential Pressure
- psi: 174 (kPa: 1,200, bar: 12)
Enclosure Finish
- Black - Spring Colours
- Grey - Spring Colours
Enclosure, Body Material
- Red Bronze CuSn5ZnPb (Rg5) - Valve
- Zinc Chromatic Steel 1.0338, DIN 1624 - Actuator
Flange Size - 1-1/4” (DN 32)
- 1-1/4” (DN 32) - PN 25
Flange Size - 1” (DN 25)
- 1” (DN 25) - PN 25
Flange Size - 1/2” (DN 15)
- 1/2” (DN 15) - PN 25
Flange Size - 3/4” (DN 20)
- 3/4” (DN 20) - PN 25
Flow Rate
- 1.6 to 10 Kvs (m³/hour)
Materials of Construction
- Copper Tube, Ø 6 x 1 mm - Impulse Tube
Measuring Range
- pH: 7 to 10
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)
Process Temperature
- 2° to 150° C (35.6° to 302° F) - Medium
Seat / Seal Material
- 316Ti Stainless Steel - Valve
- EPDM
Setting Range
- psi: 0.1 to 1 (kPa: 0.68 to 6.89, bar: 0.0068 to 0.068)
- District heating systems