A spool valve control, comprising: a housing including a first chamber for receiving a control fluid and a second chamber for supporting a spool shaft having an axis, the spool shaft configured to move along the axis and, when the pressure of the control fluid is changed in the first chamber, slide within a cylindrical barrel within the housing, interconnecting or blocking ports Y1 and Y2, a supply port S, and exhaust ports that open in sides of the cylindrical barrel; a flexible membrane separating the first and second chambers, configured to form a flexible barrier to the control fluid in the first chamber; a permanent magnet in the second chamber; and a round head formed on an end of the spool shaft and composed of a ferromagnetic material, configured to be magnetically attracted to the permanent magnet; characterized in that the spool shaft has lands or full diameter sections facing internally facing surfaces of the cylindrical barrel supporting the spool shaft, the lands or full diameter sections are configured to block the ports and are separated by narrower sections that provide port interconnections through the cylindrical barrel; a pressure plate is provided in the second chamber against which the flexible membrane presses in response to changes in pressure of the control fluid; the permanent magnet is mounted on the pressure plate in the second chamber; and a magnetic attraction force vector produced on the round head of the spool shaft by the permanent magnet remains coaxial with the axis of the shaft, when the pressure of the control fluid is reduced in the first chamber and the pressure plate and the magnet are tilted with respect to the axis of the spool shaft, to minimize abrasion or sticking of the lands of the spool shaft to the internally facing surfaces of the cylindrical barrel caused by a tilted orientation of the pressure plate. a housing including a first chamber for receiving a control fluid and a second chamber for supporting a spool shaft having an axis, the spool shaft configured to move along the axis and, when the pressure of the control fluid is changed in the first chamber, slide within a cylindrical barrel within the housing, interconnecting or blocking ports Y1 and Y2, a supply port S, and exhaust ports that open in sides of the cylindrical barrel; a flexible membrane separating the first and second chambers, configured to form a flexible barrier to the control fluid in the first chamber; a permanent magnet in the second chamber; and a round head formed on an end of the spool shaft and composed of a ferromagnetic material, configured to be magnetically attracted to the permanent magnet; characterized in that the spool shaft has lands or full diameter sections facing internally facing surfaces of the cylindrical barrel supporting the spool shaft, the lands or full diameter sections are configured to block the ports and are separated by narrower sections that provide port interconnections through the cylindrical barrel; a pressure plate is provided in the second chamber against which the flexible membrane presses in response to changes in pressure of the control fluid; the permanent magnet is mounted on the pressure plate in the second chamber; and a magnetic attraction force vector produced on the round head of the spool shaft by the permanent magnet remains coaxial with the axis of the shaft, when the pressure of the control fluid is reduced in the first chamber and the pressure plate and the magnet are tilted with respect to the axis of the spool shaft, to minimize abrasion or sticking of the lands of the spool shaft to the internally facing surfaces of the cylindrical barrel caused by a tilted orientation of the pressure plate.