Page 73 - PNEUMATIC SYSTEM INSTRUMENT
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DUAL PRESSURE VALVE







                                                                                   OUT










                                                                 IN 1                                    IN 2


















                           Figure 9.3: Dual pressure valve and standard symbol




               The dual pressure value is used  for the logic AND  connection. The


               compressed air signal is applied to both input 1 and 1(3) produce a

               signal at output 2. No output signal will be produced even if there is


               only input signal or none.

















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