Jomar add a valve 1" eliminate shutdowns

What is for sale: Jomar add a valve 1" eliminate shutdowns

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This is a JOMAR number 800-105ADD , 1 " ADD- A -VALVE, this valve will allow you to replace a defective valve or a new valve may be installed on HOT or COLD domestic water, including chilled H2O Glycol Systems, under pressure,on L and K and M type copper tubing without shutting off the water.
It was bought but never really used... Comes with directions... Good Luck...