ولو اختلاف فشار AMOT CONTROLS مدل 4064B562F.AA

Model 4064 is used for sensing limits of increasing or decreasing  differentials. At the set differential, safety control system pressure  coming into port A will vent out of port B. A typical application would  be on a gas compressor installation. The gas discharge line would be  connected to port P1, and the suction pressure line would be connected  to port P2. If the pressure at P1 exceeded that of port P2 by the set  amount, (indicating compressor connecting rod overloading), port A would  vent and shut down the engine.  Another application would be to sense  excessive pressure drop through a filter, indicating filter cloggin