one of the many choices to be made in designing an industrial fire protection system is to determine the deluge valves operation philosophy in the event of a fire – manually or automatically. these are devices installed as closed sprinklers on the pilot line, that melt or break when temperatures reach 60˚c or more. there are two main types of pilot line: hydraulic and pneumatic. a hydraulic system uses water, while a pneumatic system is filled with air, or sometimes nitrogen gas. therefore, for certain applications a pneumatic (dry) pilot line is sometimes preferable. let’s examine the pros and cons of hydraulic vs. pneumatic pilot lines. pneumatic (dry) pilot lines were developed in order to bypass the disadvantages of hydraulic (wet) lines. they offer a cleaner operation through the use of non-corrosive media.
these factors add to the cost of the system. in addition, due to the compression factor of the air, it can take a little longer for a pneumatic system to activate the deluge valve. pneumatic valve lines are typically used for sea water because they increase the reliability of solenoid valve operation. that is because the process areas of these facilities already have the air utility in place, which makes a pneumatic line more cost competitive. tel aviv’s new light rail ‘red line’ is soon to be the first section of the new light twin-track urban railway. it is crucial to realize the importance of pressure control in fire protection systems. we take a look at the key criteria you need to know to ensure the deluge valves you choose perform to your expectations. they need fire protection systems that are autonomous and not dependent on unreliable municipal water pumps or electricity supplies.
deluge valves are used in conditions that call for quick application of large volumes of water and, for that reason, are often integral components in fire protection systems. they are commonly used in fixed fire protection systems whose pipe system is empty until the deluge valve distributes pressurised water from open nozzles or sprinklers. deluge systems contain more components and equipment than wet pipe and dry systems. deluge systems are used in conditions that require quick application of large volumes of water. they create a ‘buffer zone’ in hazardous areas or in areas where fires can spread rapidly.
or to protect tanks, transformers, or process lines from explosion. viking are a popular manufacturer of deluge valves. cla-val hydraulic and electronic deluge valves offer superior performance and durability in the most critical of fire protection applications. they are available in a wide range of materials that are poured in cla-val’s own onsite foundries for quick delivery. bringing you the latest news, trends, innovations and opinion from across the process industry, our exclusive newsletter gives you all the industry insights of the moment in one, easy-to-digest bulletin.
deluge valves are always connected to water piping. early automatic deluge systems included a hydraulic (wet) pilot line. single interlock preaction, wet pilot actuation; the tyco dv-5a automatic water control valves are diaphragm type valves that can be used in single interlock control valve deluge wet pilot actu- ation is a diaphragm type valve that can be used in deluge fire protection systems., dry pilot deluge system, dry pilot deluge system, deluge system diagram, pilot line deluge system, types of deluge system.
wet pilot deluge system. consists of model ddx automatic water control valves in sizes 2, 2-1/2, 3, 4, 6 and 8 inch (50, 65, 80, 100, 150 and 200 mm) nps. grooved inlet and outlet connections available in all sizes. flange end connections (class 150 and class 300) available in 4, 6 and 8 inch (100, 150 and 200 mm) nps. alarm devices are activated upon the flow of water into the sprinkler system piping. wet pilot trim is the basis on which dry pilot line and electrical wet system valves assembly drawings (wet pilot deluge trim) assembly drawings (dry pilot pressure regulating deluge trim) deluge systems contain more components and equipment than wet pipe and dry video demonstrates their model dv-5 deluge valve wet pilot actuation system., deluge system pdf, dry pilot actuator working principle, pilot sprinkler head, tyco deluge valve.
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