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DQC116
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dixonvalve.comHTE-Series Hydraulic Couplings
The Equalizer Connection Process
Stage 1: The Disconnected State
The plug has residual pressure trapped behind the primary
valve, while the coupler has no trapped pressure.
Stage 2: Plug Chamber Evacuated
The plug valve is opened, then the socket valve opens, evacu-
ating the plug chamber to the unpressurized socket.
Stage 3: Release Pressure
The connection continues, with the Equalizer valve being ac-
tivated, releasing the trapped pressure into the plug chamber,
then to the unpressurized socket.
Stage 4: Complete the connection
The primary valve can now open easily, since there is no lon-
ger any pressure trapped behind it, allowing the socket to fully
engage the plug.