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AVDA Differential Pressure Relief Controller
Brand: DanfossAVDA is self-acting differential pressure relief controller used for constant flow control or bypass control. Controller opens on rising differential pressure.
The controller has a control valve, an actuator with one control diaphragm and handle for differential pressure setting.
Specifications
Brand
Applications
- District Heating Plant
BSP Connection
- 1” BSPP Female
- 1/2” BSPP Female
- 3/4” BSPP Female
Cone Material
- Valve Cone: NBR-Rubber
Diaphragm Material
- EPDM-Rubber
Differential Pressure
- Maximum
Enclosure, Body Material
- Diaphragm Housing: Zinc Chromatic Steel, DIN 1624, 1.0338
- Valve Body: MS 58, Hot-Pressed, DIN 17660, W.No. 2.0402, CuZn40Pb2
Flange Size - 1” (DN 25)
- 1” (DN 25) - PN 10
Flange Size - 1/2” (DN 15)
- 1/2” (DN 15) - PN 10
Flange Size - 3/4” (DN 20)
- 3/4” (DN 20) - PN 10
Flow Rate
- 1.11 to 3.23 scfm (1.9 to 5.5 m³/hour)
Measuring Range
- Medium pH: 7 to 10
Media
- Circulation Water
- Glycolic Water up to 30 %
Mounting Position
- Horizontal
- Vertical
Nominal Pressure
- psi: 145 (kPa: 1,000, bar: 10)
Process Temperature
- -25° to 130° C (-13° to 266° F)
Seat / Seal Material
- Valve Seat: Cr Ni Steel, DIN 17660, W.No. 1.4301
Setting Range
- psi: 1.45 to 17.4 (kPa: 10 to 120, bar: 0.1 to 1.2)
Spindle Material
- Dezincing-Free Brass, BS 2874 / CZ132
- Apartment block heating
- District heating plant
- Central heating systems