Abstract: A wand with variable flow and a flow lock is provided. The wand comprises a shell, a waterway, a flow module, a flow actuator module, and a flow lock module. The waterway includes a first flow passage and a second flow passage. The flow module is operable to be disposed between the first flow passage and the second flow passage. The flow module includes a flow control mechanism that is operable to move between a first position and a second position. The flow actuator module includes a flow actuation mechanism that is operable to move between a first position and a second position. The flow lock module includes a lock mechanism that is operable to move between a first position and a second position. When the lock mechanism is in the first position, the flow control mechanism is operable to move between the first position and the second position.

Abstract: Provided is a hydraulic valve including a valve body having a first port, a second port, and a pilot port, and a piston movable in the valve body to an open position by a pilot pressure flowing through the pilot port that acts on a portion of the piston to move the piston away from a valve seat in the body to allow fluid flow between the first and second ports. The piston is then movable to the closed position by a resilient member in the absence of the pilot pressure. In this way, during an event such as a power failure of a vehicle when the pilot pressure is unavailable, the valve is closed to prevent fluid draining from a hydraulic function to prevent movement of the function without using a mechanical locking device.

Abstract: Provided is a hydraulic valve including a valve body having a first port, a second port, and a pilot port, and a piston movable in the valve body to an open position by a pilot pressure flowing through the pilot port that acts on a portion of the piston to move the piston away from a valve seat in the body to allow fluid flow between the first and second ports. The piston is then movable to the closed position by a resilient member in the absence of the pilot pressure. In this way, during an event such as a power failure of a vehicle when the pilot pressure is unavailable, the valve is closed to prevent fluid draining from a hydraulic function to prevent movement of the function without using a mechanical locking device.