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CPVC sprinkler pipe inside a firestop mock-up. Chlorinated polyvinyl chloride (CPVC) is a thermoplastic produced by chlorination of polyvinyl chloride (PVC) resin. CPVC is significantly more flexible than PVC, and can also withstand higher temperatures. Uses include hot and cold water delivery pipes and industrial liquid handling.
A common type of this style fitting is a "hex bushing" with a hex head for installation with a pipe wrench. A double-tapped bushing is more compact than a reducer but not as flexible. While a double-tapped bushing has a more minor female thread concentric to a larger male thread (and thus couples a smaller male end to a larger female), a ...
PVC/CPVC – rigid plastic pipes similar to PVC drain pipes but with thicker walls to deal with municipal water pressure, introduced around 1970. PVC stands for polyvinyl chloride, and it has become a common replacement for metal piping. PVC should be used only for cold water, or for venting. CPVC can be used for hot and cold potable water supply.
TUSTIN, CA - NOVEMBER 07: A stubborn fire at hangars at the former Tustin Air Base burns Warner Avenue and Legacy on Tuesday, Nov. 7, 2023 in Tustin, CA.
Tustin Hangar No. 1 fire, 11:48 am 7 November 2023. On 7 November 2023 at approximately 12:53am, a three-alarm fire broke out on the roof of the North Hangar. Orange County Fire Authority units responded, adapting a defensive strategy and letting it burn due to the risk of roof collapse. An investigation has been opened into the cause of the fire.
Fire protection was a new science in this time period and depended on manually turning on the sprinklers. In 1874, Henry S. Parmelee of New Haven, Connecticut, patented an automatic sprinkling device, and four years later the Providence Steam and Gas Pipe Co. secured the right to manufacture and install it, paying royalties to the inventor.
In a fire, PVC can form hydrogen chloride fumes; the chlorine serves to scavenge free radicals, making PVC-coated wires fire retardant. While hydrogen chloride fumes can also pose a health hazard in their own right, it dissolves in moisture and breaks down onto surfaces, particularly in areas where the air is cool enough to breathe, so would ...
Fire stations frequently contain working and living space for the firefighters and support staff. In large U.S. cities, fire stations are often named for the primary fire companies and apparatus housed there, such as "Ladder 49". Other fire stations are named based on the settlement, neighborhood or street where they are located, or given a number.