Marathon SP623336 Vacuum Relief Valve

In order to assure proper warranty coverage, a vacuum relief valve must be installed on the cold water inlet. It can be installed in either the vertical or horizontal position. Without this valve a break in the main supply line can create a vacuum inside the water heater irreparably damaging the inner tank.

This replacement valve is compatible with all Marathon models and is designed to be installed into a brass T-fitting. For a complete assembly that includes the T-fitting, seeĀ SP623335.

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