Abstract: A solenoid operated valve and method of assembly characterized by a threaded connection between the pole piece (69) and the cage (11), the threaded connection (75) including a first threaded connecting portion fixed in relation to the pole piece and a second threaded connecting portion fixed in relation to the cage and in threaded engagement with the first threaded portion such that relative rotation of the first and second threaded portions would vary the axial spacing between the proximal end of the pole piece and the valve seat (38) over a range of adjustment; and an anti-rotation device interposed between the first and second threaded connecting portions for locking the first and second threaded connecting portions against relative rotation to fix the axial spacing between the proximal end of the pole piece and the valve seat within such range of adjustment, which axial spacing regulates the maximum pressure that can be supplied to the control port (25).

Abstract: A sequential stepped directional control valve accepts pressurized hydraulic fluid from a pressure port, and directs that pressurized fluid to a first stage port, or to both a first stage port and a second stage port. In the neutral position, the valve blocks the flow of pressurized hydraulic fluid into the valve. In the first stage position, pressurized hydraulic fluid flows into the valve and is directed by the valve to the first stage port, however, the pressurized fluid flow to the second stage port is blocked. In the second stage position, pressurized hydraulic fluid flows into the valve and is directed to both the first and second stage ports. When the valve transitions from the first stage position to the second stage position, the valve does not cycle through a neutral position, and the flow of pressurized hydraulic fluid to the first stage port is uninterrupted.

Abstract: A sequential stepped directional control valve accepts pressurized hydraulic fluid from a pressure port, and directs that pressurized fluid to a first stage port, or to both a first stage port and a second stage port. In the neutral position, the valve blocks the flow of pressurized hydraulic fluid into the valve. In the first stage position, pressurized hydraulic fluid flows into the valve and is directed by the valve to the first stage port, however, the pressurized fluid flow to the second stage port is blocked. In the second stage position, pressurized hydraulic fluid flows into the valve and is directed to both the first and second stage ports. When the valve transitions from the first stage position to the second stage position, the valve does not cycle through a neutral position, and the flow of pressurized hydraulic fluid to the first stage port is uninterrupted.

Abstract: A sequential stepped directional control valve accepts pressurized hydraulic fluid from a pressure port, and directs that pressurized fluid to a first stage port, or to both a first stage port and a second stage port. In the neutral position, the valve blocks the flow of pressurized hydraulic fluid into the valve. In the first stage position, pressurized hydraulic fluid flows into the valve and is directed by the valve to the first stage port, however, the fluid flow to the second stage port is blocked. In the second stage position, pressurized hydraulic fluid flows into the valve and is directed to both the first and second stage ports. When the valve transitions from the first stage position to the second stage position, the valve does not cycle through a neutral position, and the flow of pressurized hydraulic fluid to the first stage port is uninterrupted.

Abstract: A solenoid operated valve and method of assembly characterized by a threaded connection between the pole piece (69) and the cage (11), the threaded connection (75) including a first threaded connecting portion fixed in relation to the pole piece and a second threaded connecting portion fixed in relation to the cage and in threaded engagement with the first threaded portion such that relative rotation of the first and second threaded portions would vary the axial spacing between the proximal end of the pole piece and the valve seat (38) over a range of adjustment; and an anti-rotation device interposed between the first and second threaded connecting portions for locking the first and second threaded connecting portions against relative rotation to fix the axial spacing between the proximal end of the pole piece and the valve seat within such range of adjustment, which axial spacing regulates the maximum pressure that can be supplied to the control port (25).

Abstract: A sequential stepped directional control valve accepts pressurized hydraulic fluid from a pressure port, and directs that pressurized fluid to a first stage port, or to both a first stage port and a second stage port. In the neutral position, the valve blocks the flow of pressurized hydraulic fluid into the valve. In the first stage position, pressurized hydraulic fluid flows into the valve and is directed by the valve to the first stage port, however, the fluid flow to the second stage port is blocked. In the second stage position, pressurized hydraulic fluid flows into the valve and is directed to both the first and second stage ports. When the valve transitions from the first stage position to the second stage position, the valve does not cycle through a neutral position, and the flow of pressurized hydraulic fluid to the first stage port is uninterrupted.