Post Indicator Valve (PIV) 3
Post Indicator Valve (PIV) 3 :
A type of valve used for underground piping, having a lockable actuator atop a post with a window indicating "open" or "shut" status of the valve. It can be used to control a sprinkler system, hydrant or other device, or may be used as a divisional valve. Post indicator valves are also used for process and domestic water systems, and when this occurs on the same property, they are distinguished by color - red for fire, blue green or yellow for process water
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