AFPA



A self-acting differential pressure relief controller primarily for use in district heating systems. The controller opens on rising differential pressure.

Controller consist of:
- control valve (flange connection) type VFG 2 / VFG 21 - for technical parameters look at part "Combine with..." below,
- pressure actuator type AFPA with control diaphragm and a spring for differential pressure setting - see below.


AFPA

Technical data



Code No.tmax
(°C)
FunctionSetting typeMin. Dp setting
(bar)
Max. Dp setting
(bar)
Max. operation pressure
(bar)

AFPA

003G1019 150Diff. press. relief controllerAdjustable1525
003G1020 150Diff. press. relief controllerAdjustable0.52.525
003G1021 150Diff. press. relief controllerAdjustable0.151.225
003G1022 150Diff. press. relief controllerAdjustable0.10.625
003G1023 150Diff. press. relief controllerAdjustable0.050.316