Valve comprising: a valve body including an inlet, an outlet, and a main passage that extends longitudinally from a first end to a second end of the valve body, wherein the main passage includes a first volume, a second volume and an air passage located between the inlet and the outlet and between the first volume and the second volume; a first seal retainer and a second seal retainer, wherein the first seal retainer is located at the first end of the valve body and the second seal retainer is located at the opposing second end of the valve body; and a valve spool moveable relative to the valve body and extending through the first volume and the second volume and through a passage of the first seal retainer and a passage of the second seal retainer, wherein the valve spool includes a first exterior spool extension and a second exterior spool extension attached to the valve spool, wherein the first exterior spool extension and the second exterior spool extension separate and define the first volume and the second volume, and wherein valve spool includes a central vent passage capable of fluid communication with each of the first volume and the second volume, a first vent passage substantially transverse to the central vent passage and in fluid communication with the central vent passage and the first volume and a second vent passage substantially transverse to the central vent passage and in fluid communication with the central vent passage and the second volume; wherein air flows between the first volume and the second volume through the central, first and second vent passages as the valve spool moves relative to the valve body to change the valve between an actuated position and a non-actuated position; wherein the volumes of the first volume and the second volume are variable as air flows between the two volumes and during the movement of the valve spool relative to the valve body, characterized in that the valve is an internally vented valve, wherein the first volume and the second volume are provided without an exterior vent hole, and the volume of the first volume and the volume of the second volume change inversely relatively to each other during the movement of the valve spool relative to the valve body, so that the total volume of the first volume and the second volume is constant. a valve body including an inlet, an outlet, and a main passage that extends longitudinally from a first end to a second end of the valve body, wherein the main passage includes a first volume, a second volume and an air passage located between the inlet and the outlet and between the first volume and the second volume; a first seal retainer and a second seal retainer, wherein the first seal retainer is located at the first end of the valve body and the second seal retainer is located at the opposing second end of the valve body; and a valve spool moveable relative to the valve body and extending through the first volume and the second volume and through a passage of the first seal retainer and a passage of the second seal retainer, wherein the valve spool includes a first exterior spool extension and a second exterior spool extension attached to the valve spool, wherein the first exterior spool extension and the second exterior spool extension separate and define the first volume and the second volume, and wherein valve spool includes a central vent passage capable of fluid communication with each of the first volume and the second volume, a first vent passage substantially transverse to the central vent passage and in fluid communication with the central vent passage and the first volume and a second vent passage substantially transverse to the central vent passage and in fluid communication with the central vent passage and the second volume; wherein air flows between the first volume and the second volume through the central, first and second vent passages as the valve spool moves relative to the valve body to change the valve between an actuated position and a non-actuated position; wherein the volumes of the first volume and the second volume are variable as air flows between the two volumes and during the movement of the valve spool relative to the valve body, characterized in that the valve is an internally vented valve, wherein the first volume and the second volume are provided without an exterior vent hole, and the volume of the first volume and the volume of the second volume change inversely relatively to each other during the movement of the valve spool relative to the valve body, so that the total volume of the first volume and the second volume is constant.