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Reverse Delay Valve

  1. Connect external vacuum source to port on White side of delay valve. Connect 1 end of 24" (610 mm) section of rubber hose to vacuum gauge and other end to port on colored side of valve.
  2. With clock, time device in view and a constant 10 in. Hg vacuum applied, note time required for gauge pointer to move from 0-8 in. Hg.
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