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  • Users: cjw32
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  1. cjw32

    Ventilation Duty Standby Seamless Changeover

    Hi, I'm reviewing a specification for a vent control system upgrade and I'd be grateful for some advice. The system has three fan sets operating duty/standby. The first is for a cell extract. The second for building extract. The third is the air handling unit to supply conditioned air. The...
  2. cjw32

    Intermittent Increased Flow from Diapghram Pump

    We have a diaphragm metering pump designed to pump around 80L/hr. We are pumping nitric acid. The nitric acid is in a 5000L tank standing about 3m. The pump sits about 1m from the base of the bund. The pump has 1/2" inlet and outlet, but it is connected by 10mm pipe to the process inlet line...

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