DISPENSING TOOL ASSEMBLY FOR EVACUATING AND CHARGING A FLUIDSYSTEM

摘要

A fluid dispensing tool includes a three section aluminum body defining a top evacuation port and a top fluid fill port each having an annular valve seat and connected by a cross passage. Poppet valve members are supported for vertical movement between retracted open positions below the cross passage and closed positions extending upwardly through the cross passage and engaging the valve seats. The valve members are air actuated in an alternati ng manner with the evacuation valve member closing before the fluid valve membe r opens and vice versa. A center passage extends downwardly from the cross passage and through a downwardly projecting discharge spout which carries a sleeve or shuttle supporting a set of resilient sealing bands. The sealing bands are compressed axially by an air actuated piston and expand radially outward ly for sealing with a radiator fill neck above and below a port for an overflow container. The overflow container is independently filled by fluid passages extending through the tool body, and a pair of air actuated pivotal fingers are supported by the tool body for locking the tool to the radiator fill neck.