A pressure control valve includes a spool that strokes to one side in the direction of an axis due to the conduction of current to a coil, a spring that urges the spool to the other side in the axis direction, a control device for controlling the conduction of the current to the coil, a determination unit for determining the start of a foreign substance removing operation by the spool, a command value setting unit for setting a command value for the current conducted to the coil, and a dither current setting unit for setting a dither current superimposed on the command value. When the determination unit determines the start of the foreign substance removing operation, the dither current setting unit changes an oscillation frequency of the dither current to an oscillation frequency lower than the frequency at the current point in time, and the command value setting unit periodically increases and reduces the command value on which the changed oscillation frequency is superimposed.

A pressure control valve includes a spool that strokes to one side in the direction of an axis due to the conduction of current to a coil, a spring that urges the spool to the other side in the axis direction, a control device for controlling the conduction of the current to the coil, a determination unit for determining the start of a foreign substance removing operation by the spool, a command value setting unit for setting a command value for the current conducted to the coil, and a dither current setting unit for setting a dither current superimposed on the command value. When the determination unit determines the start of the foreign substance removing operation, the dither current setting unit changes an oscillation frequency of the dither current to an oscillation frequency lower than the frequency at the current point in time, and the command value setting unit periodically increases and reduces the command value on which the changed oscillation frequency is superimposed.

Certain embodiments of the present disclosure relate to a gas flow valve. The gas flow valve includes a housing configured to receive a flow of gas. The gas flow valve further includes a plunger configured to move between a closed position and one or more open positions within the housing. The gas flow valve further includes a position sensor configured to measure a distance associated with a difference in position of the plunger between the closed position and the one or more open position. The gas flow valve further includes a force sensor coupled to the plunger and configured to measure a force exerted by the plunger in the closed position on a sealing surface.

A method for producing a rotary slide valve for regulating a flow of fluid, including a rotary slide (02) which is rotatably mounted about a rotational axis (R) in a valve housing, includes producing the rotary slide (02) by injection molding, producing at least one circumferential or casing section (04) of the valve housing (03) by injection molding, and installing the rotary slide (02) within the valve housing (03). A gap between the rotary slide (02) and the directly adjacent valve housing circumferential or casing section (04) of the valve housing (03) in the radial direction, allows the rotary slide (02) to rotate about the rotational axis (R) and facilitates a seal which does not exceed a tolerable leak between the rotary slide (02) and the circumferential or casing section (04) of the valve housing (03).

A gas flow valve includes a plunger configured to move between a closed position and one or more open positions within a housing. The gas flow valve further includes a force sensor configured to measure a force exerted by the plunger in the closed position and further configured to induce vibration responsive to being energized to dislodge particles from one or more surfaces of the gas flow valve.