Stop and waste valve



stonework stop and waste valve A valve that can be turned off and on with a long key that is extended down a sleeve to the valve. The valve stops the water flow in the pipe and opens a small hole in the valve to drain (waste) all water downstream and at a higher elevation. This is important in areas where the ground freezes in the winter to prevent freeze damage.

stope An excavation with a series of benches or tables.

storage tank A container that receives water from a source and holds it for distribution to the points of use.

storm cellar An underground space for shelter against violent storms such as tornadoes or hurricanes.

storm drain or storm sewer A conduit, pipe, natural channel, or structure used to convey waste water or storm water, but not industrial waste or sanitary sewage.

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