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AVQMT Flow & Temperature Controller
Brand: Danfoss
AVQMT is a self-acting flow and temperature controller with integrated control valve primarily for use in district heating systems. The controller closes on rising temperature or when set maximum flow is reached.
AVQMT controller can be combined with Danfoss electrical actuators AMV(E) (and controlled by ECL electronic controllers) and with AVT or STM thermostatic actuators.
The controllers AVQMT have a control valve with adjustable flow restrictor, connection neck for thermostat, connection neck for electrical actuator (AVQMT only), and a pressure actuator with one control diaphragm.
Specifications
Brand
Actuator Size
- 8.37 in² (54 cm²)
Applications
- District Heating Systems According to DIN 4747
- Heating Systems According to EN 12828 (DIN 4751) & EN 12953-6 (DIN 4752)
- Water Heating Systems for Drinking & Industrial Waters According to DIN 4753
Approvals & Certifications
- EN 14597
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 Cone: Dezincing Free Brass CuZn36Pb2As
Connection Style
- Cylinder External Thread According to ISO 228/1
- Flange PN 25, According to EN 1092-2
Diaphragm Material
- EPDM
Differential Pressure
- psi: 2.90 (kPa: 20, bar: 0.2) - Flow Restrictor
- psi: 232.1 (kPa: 1,600, bar: 16) - Max.
- psi: 290.1 (kPa: 2,000, bar: 20) - Max.
Enclosure, Body Material
- Lower Housing of Actuator: Dezincing Free Brass CuZn36Pb2As
- Upper Housing of Actuator: 304L Stainless Steel
- Valve Body: Ductile Iron EN-GJS-400-18-LT (GGG-40.3) for DN 32 to DN 50
- Valve Body: Red Bronze CuSn5ZnPb for DN 15 to DN 25
Flange Size - 1-1/2” (DN 40)
- 1-1/2” (DN 40) - PN 25
Flange Size - 1-1/4” (DN 32)
- 1-1/4” (DN 32) - PN 25
Flange Size - 2” (DN 50)
- 2” (DN 50) - PN 25
Flow Rate
- Kvs Value of Dp Controller: 0.23 to 14.71 scfm (0.4 to 25 m³/hour)
- Range of Flow Setting: 0.01 to 8.83 scfm (0.015 to 15 m³/hour)
Materials of Construction
- Impulse Tube: Copper Tube, Ø 6 x 1 mm
Media
- Circulation Water, Glycolic Water up to 30 %, pH: 7 to 10
Nominal Pressure
- psi: 362.6 (kPa: 2,500, bar: 25)
Process Temperature
- 2° to 150° C (35.6° to 302° F)
Seat / Seal Material
- Sealing DP & Sealing MCV: EPDM
- Sealing MCV: Metal
- Valve Seat: 316Ti Stainless Steel
- District heating systems acc. to DIN 4747
- Heating systems acc. to EN 12828 (DIN 4751) and EN 12953-6 (DIN 4752)
- Water heating systems for drinking and industrial waters acc. to DIN 4753
