Patent ID: 7322562

Claim:
A valve comprising: a valve body defining a valve chamber therein, said valve body including a valve seat and an outlet port; a coil mounting structure mounted to the valve body and including an internal bore extending completely therethrough; an electromagnetic coil wound on the coil mounting structure; a shaft extending into the internal bore of the coil mounting structure, said shaft including a shaft bore extending therethrough and being in fluid communication with the internal bore of the coil mounting structure, said shaft including a sealing member mounted to the shaft proximate to the valve seat; a spring applying a spring bias to the sealing member to cause the sealing member to seat against the valve seat; and a bellows mounted to the shaft and to the valve body to form a bellows chamber within the valve chamber, wherein an end of the shaft opposite to the coil mounting structure is positioned within the bellows chamber, and wherein a pressure applied to the internal bore of the coil mounting structure applies a force against the sealing member in combination with the spring to force the sealing member against the valve seat and applies a pressure to the bellows chamber to force the sealing member away from the valve seat to provide pressure equalization.