Danfoss
VFG 2
Excellent use with direct heating systems.
It is recommended that the total pressure loss is recalculated since many district heating plants only guarantee a low differential pressure.
Δp = max. 10 kPa
Regulation interval 5-35, 10-70, 15-150, 50-300 eller 100-600 kPa.
VFG 2 requires an actuator (AFP) which is ordered seperately.
Description
AFP VFG2 (VFG 21) is a self-acting differential
pressure controller primarily for use in district
heating systems. The controller closes on rising
differential pressure.
The controller has a control valve (flange
connection), an actuator with control diaphragm
and a spring for setting differential pressure.
Main data:
• DN 15 – 250
• kvs 4.0 – 400 m3/h
• PN 16, 25, 40
• Max. operating pressure: 16, 25 bar
• Temperature: 2 … 200 °C
• Connections:
– Flange
• Flow and return mounting
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