They are commonly used on standpipe and sprinkler systems in high rise buildings, as well as for warehouses that contain high hazard storage. #9 Fire Pump: A pump that is used to provide additional pressure to the water supply in order to meet the hydraulic design requirements of the system. Otherwise known as an FDC, or siamese connection (since there are two inlets on the connection), this connection is located on the exterior of the building. #8 Fire Department Connection: Connection used by the fire department to pump water into the fire sprinkler or standpipe system to supplement the building’s water supply. These caps prevent people from sticking objects into the fire department connection. #7 Fire Department Caps: Caps that are installed on the threaded inlets of the fire department connection. #6 Dry Pipe Sprinkler System: A sprinkler system employing automatic sprinklers that are attached to a piping system containing air or nitrogen under pressure, the release of which (as from the opening of a sprinkler) permits the water pressure to open a valve known as a dry pipe valve, and the water then flows into the piping system and out the opened sprinklers. Otherwise, the valves may be closed to do system repairs, testing, or maintenance. the control valve for a fire pump test header). The control valve should always be in the open position, although there are some unique exceptions (i.e. In other words, closing this valve will prevent water from flowing out of the fire sprinklers. #5 Control Valve: Controls the flow of water to the sprinkler system. This plate will drop down in the event of a fire, which will allow the sprinkler head to activate. #4 Concealed Sprinkler Head: A sprinkler head that is installed slightly above a ceiling, with a cover plate that conceals the actual sprinkler head. For example, this device is used to prevent water in the fire sprinkler system from returning to the public water supply. #3 Check Valve: A valve that allows in only one direction to prevent backflow. It is an indicating type, since you can see whether it’s open or closed by looking at the orientation of the “flag” on the valve. #2 Butterfly Valve: A common type of control valve used to regulate flow in a system. When water flows through the line, either the gong or electric bell will ring, which will alert passer-byers to contact emergency services. The alarm line will be connected to either a mechanical water motor gong, or an electric bell. When water flows in an alarm valve, the valve’s clapper will lift off of the seat, and water will flow through the alarm line. #1 Alarm Check Valve: A common type of fire sprinkler system alarm apparatus. Whether you’re a property manager or building owner trying to understand the work that needs to be done on your system, or just starting out in the fire sprinkler industry, we’ve got you covered.ĭo you need help removing a violation right away? Request service today to get started. You’re in luck! Here, we’re going to explain the most common components of your sprinkler system and why they are important for you to know. But there’s a problem – you have absolutely no idea what any of these parts are or the essential roles they play in a functioning fire sprinkler system. As you read through the report, you notice there are several deficiencies listed and repairs needed to be fixed in order to keep your building up to code. Picture this, you’ve just had your building’s fire sprinkler system inspected and later receive a report from your fire sprinkler company.
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