Dry Pipe Sprinkler SystemĪ fire sprinkler system using automatic sprinklers that are installed at a piping system containing air or nitrogen under pressure, the release of which allows the water pressure to open a valve (known as a dry pipe valve) and the water then flows into the piping system and out from the opened sprinklers. When this valve is activated (opens), water flows into the piping system and is discharged from all fire sprinklers. The most commonly used are briefly presented below: Deluge Sprinkler Systemįire Sprinkler system with open sprinklers that are installed at a piping system which is connected to a water supply through a valve that is opened by the operation of a detection system installed in the same area as the sprinklers. There are various sprinkler systems type configurations.
Installation orientation (horizontal, vertical etc) Table 1 - Sprinklers temperature classification Temperature rating (please refer to table below) Fast response fire sprinklers have an RTI index of 50 or less. Thermal sensitivity: This is measured with the Response Time Index (RTI) and provides an indication of how quickly the thermal element is activated. In accordance with NFPA 13, the major characteristics that define the ability of a sprinkler are the following: Picture 1 - Various types of fire sprinklers If, as a result of a fire, the air temperature exceeds a specified limit threshold, the expanding liquid bursts the bulb, thus activating the sprinkler.
Closed Fire SprinklersĬlosed fire sprinklers typically consist of a glass bulb filled with liquid enclosing the sprinkler. In accordance with the definition provided at NFPA 13 (2007 edition), an open fire sprinkler is a water sprinkler that is not equipped with actuators or other heat-responsive elements. However, generally speaking, there are two (2) major types of sprinklers: the open type and the closed type fire sprinklers. A fire sprinkler system consists of a piping network with fire sprinklers extending all over the fire-protected area.
0 kommentar(er)
