AFA 2 / VFG 22(1)

The controller 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. Further on two valve versions are available: ∙ VFG 22 with metallic sealing cone ∙ VFG 221 with soft sealing cone Together with Danfoss intelligent electrical actuator AMEi 6 intelligent optimization functions are available: ∙ iNET-intelligent network balancing