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  1. Sammy1

    Airflow across an orifice or nozzle

    I'm connecting a 200 gallon tank maintained at negative 13 psi to a mold and pulling a vacuum on that mold by actuating a solenoid valve. If the mold is sealed the resulting pressure drop in the tank is easily calculated with P1*V1 + P2*V2 = P3*V3. Where P1 is the pressure of the vacuum tank, V1...
  2. Sammy1

    Airflow across a orifice or nozzle

    I'm connecting a 200 gallon tank maintained at negative 13 psi to a mold and pulling a vacuum on that mold by actuating a solenoid valve. If the mold is sealed the resulting pressure drop in the tank is easily calculated with P1*V1 + P2*V2 = P3*V3. Where P1 is the pressure of the vacuum tank, V1...

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