Red post indicator valves are designated for stopping fires, while yellow, green, and blue ones indicate domestic or industrial purposes. Incidentally, post indicator valves are also used in industrial or domestic settings to transport process water, which is not safe to drink.
#Tire pressure monitoring system indicators code#
In fact, MeyerFire points out that code references accounting for building collapse now only appear indirectly, via requirements to place hydrants and post indicator valves a sufficient distance from a structure. MeyerFire notes that the decision stems from the effectiveness of fire sprinkler systems in controlling fires before walls reach the point of collapse, as well as a desire to reduce the cost of sprinkler installations. A post indicator valve allows firefighters to cut off supply to compromised areas, ensuring their efforts aren’t hampered by the loss of pressure, or water being diverted to the wrong places.īut over the last decade, NFPA relaxed its post indicator valve requirements.
The valve assembly also serves as an easy way to stop the flow of water from the water supply main during emergencies or routine maintenance.ĭuring a building fire, the collapse of an exterior wall could damage water supply mains or create new openings to the water supply. Since the first post indicator valve was installed in 1974, this equipment has been a mainstay of fire protection applications where responding firefighters need a clear indication of whether an out-of-sight valve is open or closed. Post indicator valves are generally used to control the flow of water to a sprinkler system, hydrant, or another device with underground piping. What’s the purpose of a post indicator valve? We also carry post indicator valves on request. Installing a post indicator valve in your fire protection system? Be sure to check out our universal PIV wrench and PIV tamper switch. We also dig into when these devices are called for by NFPA. This blog explores the value of adding a post indicator valve to a fire protection system. And while the new rules gave system designers more options, they also made it less clear when they’re needed. But in 2010, the National Fire Protection Association’s (NFPA’s) post indicator valve requirements changed. Post indicator valves (PIV) play an important role in many fire protection systems, opening and closing the water supply from outside the building. When to use indicating valves on fire protection systems
0 kommentar(er)
