Patent ID: 7516942

Claim:
An air conditioning service plug-type valve, comprising: a valve body having a chamber, first and second openings extending through the valve body; a stem having an actuating portion and a plug portion, the plug portion configured for being received in the chamber of the valve body, the stem, when the plug portion is received in the chamber, being rotatable relative to the valve body between a closed position blocking fluid communication between the first and second openings of the valve body and an open position forming a first fluid passageway between the first and second openings of the valve body, the plug portion including a fluid blocking portion located immediately adjacent the first opening when the stem is in the closed position, a groove extending into a peripheral surface of the plug portion defining the fluid blocking portion, wherein the stem includes a second fluid passageway between the second opening of the valve body and the actuating portion of the stem when the stem is in the closed position; an actuatable valve located in the second fluid passageway in the actuating portion of the stem; and a seal disposed in the groove and extending between the plug portion and the valve body.