Patent ID: 8235356

Claim:
An air valve for a paint gun, said air valve comprising: an air flow chamber; a valve chamber intersecting the air flow chamber; a closure member slidable in the valve chamber, the closure member having a main body having therein a conduit, front and rear seals larger in outer diameter than the main body and configured to respectively seal against front and rear inner sealing surfaces of the valve chamber at opposing front and rear sides of the intersected air flow chamber, thereby closing the airflow chamber when the closure member is in a closed position, a head which is at a front end of the main body and on which the front seal is positioned, and at least one hole extending through the head to be in fluid communication with the conduit for connecting the front seal and the rear seal; and a biasing element biasing the closure member forward to the closed position when no external load is applied; wherein the rear seal has a lateral face in sealing contact with the rear inner sealing surface of the valve chamber, and a front face which faces toward the head and which has a rearwardly recessed, circumferential groove of a smaller diameter than the lateral face of the rear seal, wherein an entirety of the front face is in non-sealing contact with the rear inner sealing surface of the valve chamber, wherein the airflow chamber is an air inlet intersecting the valve chamber for supplying air into the valve member, and wherein an entirety of the closure member, including the head, the main body and the front and rear seals, is an integral piece of a plastics material.