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AVA Pressure Relief Controller
Brand: Danfoss
AVA is a self-acting pressure relief controller primarily for use in district heating systems. The controller is normally closed and opens on rising pressure.
The controller has a control valve, an actuator with one control diaphragm and a spring(s) for pressure setting.
Specifications
Brand
Actuator Size
- 8.37 in² (54 cm²)
BSP Connection
- G 1” A
- G 1-1/4” A
- G 3/4” A
Cone Material
- Valve Cone: Dezincing Free Brass CuZn36Pb2As
Diaphragm Material
- EPDM
Differential Pressure
- Differential Pressure Setting Range (Actuator): psi: 14.5 to 159.5 (kPa: 100 to 1,100, bar: 1 to 11)
- Maximum
Enclosure, Body Material
- Actuator Housing Lower Casing of Diaphragm: Dezincing Free Brass CuZn36Pb2As
- Actuator Housing Upper Casing of Diaphragm: 304L Stainless Steel
- Valve Body Flange: Ductile Iron EN-GJS-400-18-LT (GGG-40.3)
- Valve Body Thread: Red Bronze CuSn5ZnPb (Rg5)
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
- 4 to 25 m³/hour
Materials of Construction
- Impulse Tube: Copper Tube Ø 6 x 1 mm
Measuring Range
- Medium PH: 7 to 10
Media
- Circulation Water
- Glycolic Water up to 30 %
Nominal Pressure
- psi: 362.6 (kPa: 2,500, bar: 25)
Process Temperature
- 2° to 150° C (35.6° to 302° F)
Seat / Seal Material
- Seal: EPDM
- Valve Seat: 316Ti Stainless Steel
- District Heating Systems