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Yard Hydrant (freeze proof)

A freeze proof yard hydrant is an outdoor water supply outlet that has a valve and outlet above ground and a drain opening below the frost level. When the valve isĀ  opened, water flows. When the valve is closed, the water supply to the hydrant is shut off below the frost level and a drain hole is opened that allows the water in the yard hydrant pipe to drain into a gravel bed. This drains the yard hydrant and its riser so that the hydrant will not freeze. Waste Liquid material in the plumbing drainage system that does not contain urine or fecal material. Waste is sometimes referred to as gray water. Waste comes from all plumbing fixtures except toilets and urinals.