Pressure reduction controllers

AFD

AFD 2

AVD / AVDS

AVD(S) is a self-acting pressure reduction controller primarily for use in district heating systems. The controller is normally opened and closes on rising pressure. The controller has a control valve, an actuator with one control diaphragm and a spring(s) for pressure setting.

VFG 2

VFG 2 / VFGS 2

The controllers STFW/VFG(S) 2 and STFW/AFT/VFG 2 are used for temperature control and temperature monitoring of drinking water and heating systems.

VFG 21

VFG 22

VFG 221

VFGS 2