FIELD: physics.
SUBSTANCE: disclosed is an automatic pressure maintenance unit comprising a pressure sensor, an electromagnetic valve, a pump, a tank and a control system. Pressure sensor, diaphragm tank, filter, solenoid valve, pump and tank are connected in series to the pipeline. Tank is pressureless, and control system depending on pressure in system controls solenoid valve and pump.
EFFECT: higher reliability due to reduction of discharge lines and pressure increase.
7 cl, 2 dwg
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