Abstract: A control valve includes a valve body, which defines first, second, and third valve passageways. The valve body also defines a supply passageway. The control valve includes a first spool movable relative to the valve body between first and second positions. The control valve includes a second spool movable relative to the valve body between open and closed positions. The supply passageway is in fluid communication with the first valve passageway when the first spool is in the first position. The supply passageway is in fluid communication with the second valve passageway when the first spool is in the second position. The supply passageway is in fluid communication with the third valve passageway when the second spool is in the open position. The second spool precludes fluid flow between the supply passageway and the third valve passageway when the second spool is in the closed position.

Abstract: A control valve includes a valve body, which defines first, second, and third valve passageways. The valve body also defines a supply passageway. The control valve includes a first spool movable relative to the valve body between first and second positions. The control valve includes a second spool movable relative to the valve body between open and closed positions. The supply passageway is in fluid communication with the first valve passageway when the first spool is in the first position. The supply passageway is in fluid communication with the second valve passageway when the first spool is in the second position. The supply passageway is in fluid communication with the third valve passageway when the second spool is in the open position. The second spool precludes fluid flow between the supply passageway and the third valve passageway when the second spool is in the closed position.

Abstract: A valve assembly includes a housing with a housing control bore, a supply port in selective fluid communication with the housing control bore for receiving working fluid from a working fluid source, a control port in fluid communication with the housing control bore for communicating the working fluid to and from a working device switchable from a first mode of operation to a second mode of operation at a predetermined pressure, and a vent port in fluid communication with the housing control bore for selectively returning the working fluid to the working fluid source. A supply valve member is selectively seated and unseat with a supply valve seat. A bleed orifice is provided for communicating the working fluid from the supply port to the control port at a second pressure that is less than the predetermined pressure when the supply valve member is seated with the supply valve seat.

Abstract: A valve assembly includes a housing with a housing control bore, a supply port in selective fluid communication with the housing control bore for receiving working fluid from a working fluid source, a control port in fluid communication with the housing control bore for communicating the working fluid to and from a working device switchable from a first mode of operation to a second mode of operation at a predetermined pressure, and a vent port in fluid communication with the housing control bore for selectively returning the working fluid to the working fluid source. A supply valve member is selectively seated and unseat with a supply valve seat. A bleed orifice is provided for communicating the working fluid from the supply port to the control port at a second pressure that is less than the predetermined pressure when the supply valve member is seated with the supply valve seat.