Deluge system ppt

The system piping is empty until the DV is actuated. It is a quick release, hydraulically operated diaphragm actuated type of valve. The temperature that activates the sprinklers depends on the type of hazard against which the Fire Sprinkler System is supposed to protect against.

Open Orifice sprinklers, on the other hand are primarily used for in water spray systems or deluge sprinkler systems. Discharges a mixture of water and lowDischarges a mixture of water and low expansion foam.

The detection system is installed in the same area as the sprinklers. When the detection system is activated water discharges through all of the sprinkler heads in the system. 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.

Everything you need to know about Deluge Valves. Deluge Valves are used in conditions that call for quick application of large volumes of water an for that reason, are often integral components in fire protection systems. In this article, PIF explain how deluge valves work, what their advantages and disadvantages are, and where you can lay your hands on one.

Residential systems, these system normally utilize a quick response type sprinkler head that affords a higher level of life safety for occupants.

It should be noted that the residential type systems normally protect the occupied or living areas only. They are composed of open sprinklers attached to a piping system that is connected to a water supply through a heat responsive valve. When this valve opens, water is discharged into the piping system and through the open sprinklers. Deluge Water Spray SysteAn automated water spray system where the water distribution piping is equipped with open spray nozzles for discharging over a protection area or equipment.

A preaction system is similar to a deluge system except that automatic sprinklers are use and a small air pressure is usually maintained in the piping network to ensure that the system is air tight. As with a deluge system , a separate detection system is used to activate a deluge valve, admitting water to the piping. Deluge spray systems: A sprinkler system similar to the wet pipe spray system , with the exception of employing open discharge devices. Preaction spray systems: A sprinkler system similar to the dry pipe spray system with the addition of a supplemental detection system installed in the same area as the sprinklers.

Preaction systems are generally used in areas where damage from inadvertent operation of water spray systems must be avoided. So for that matter they are more complex. Detection systems can include heat, smoke, ultraviolet (UV), or infrared (IR). Applications for Deluge Valves. Deluge systems contain more components and equipment than wet pipe and dry systems.

The sprinkler system shall provide fire sprinkler protection for the entire area. Except as modified herein, the system shall meet the requirements of NFPA and NFPA 72.

Deluge fire sprinkler systems feature open-type sprinkler heads attached to a dry pipe that is connected to a main water supply. Using an innovative detection system that recognizes smoke or heat, this fire suppression installation activates a valve that releases water to all sprinklers. Drains that terminate out an exterior wall shall be equipped with a galvanized 45° elbow pointed towards an adequately sized splash-block. Water Control Valve The deluge systems shall utilize a 90° pattern or straight-through pattern type of deluge valve. Single systems should be designed to limit flow rates to as small as practicable.

Spray pattern and nozzle type: Nozzles should be deluge spray nozzles that form a full circle solid cone discharge. The type of sprinkler system (except deluge) typically depends on the environmental conditions in which the system will be used and the nature of the space being protected. Wet-Pipe Sprinkler System.

This type of system is the most common and is typically the easiest to design, install, and maintain. This is a quick reference field guide, with select abbreviated sections of NFPA 2 1 and the plumbing code. Inspectors should familiarize themselves with NFPA ITM Water-Based Fire Protection Systems. Each deluge or preaction valve shall be trip tested annually at full flow in warm weather and in accordance with the manufacturer’s instructions.

Each dry pipe valve shall be trip tested annually during warm weather. Fire-protective” means the glazing defends against the spread of flames and smoke. Such materials include traditional wired glass, glass ceramics and specially tempered glass.