The A.Y. McDonald Mfg. Co. model number 558 Re-Lubrication Tool is an easy and economical way to lubricate 175 PSIG gas meter plug valves. The tool is machined from steel alloy for durability and has an Allen wrench mounted to the body for convenience. It can be used to re-lubricate A.Y. McDonald Mfg. Co. valves in the full open or the full closed position when the valve is pressurized or unpressurized.

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