n.a
reference to a
valve which protects pipes against freezing in
cold weather. A
valve is a device used to
control the
flow of a liquid, vapor or
gas through a
pipe or passageway. Pipes which are exposed to freezing temperatures in winter and are not protected by a
heat source must be drained of water. Weather
valves cut the
flow of water to these pipes and allow them to be drained.