WOLFRAM SYSTEM MODELER
    ThreePort_2Model with three connectors  | 
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SystemModel["Hydraulic.Interfaces.ThreePort_2"]

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         Hydraulic.Valves.DirectionalControl Dual pressure valve with lumped volumes  | 
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         Hydraulic.Valves.DirectionalControl Shuttle valve with lumped volumes  | 
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         Hydraulic.Valves.DirectionalControl.Internal Static dual pressure valve  | 
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         Hydraulic.Valves.DirectionalControl.Internal Static shuttle valve  |