What is the purpose of a fire riser?
What is the purpose of a fire riser?
These system risers contain the pressure gauges, control valves, water flow alarms, and main drains for the sprinkler system. Riser rooms serve the purpose of allowing maintenance workers and emergency personnel to quickly and easily access the fire sprinkler system’s controls for maintenance and emergency purposes.
What is fire alarm riser?
Fire riser is a component of the fire suppression system. It is a pipe connected to a pressurized water source which supplies water to the sprinkler system in the building. The fire risers typically have a waterflow switch that will activate the fire alarm system when a sprinkler head fuses.
What is a system riser?
In reality, a riser system consists of multiple segments of finite length pipe members joined together to form a long slender pipe that extends from the platform above water to the seabed. From: Rehabilitation of Pipelines Using Fiber-reinforced Polymer (FRP) Composites, 2015.
Do sprinklers need risers?
Risers are typically used to support sprinklers, drip emitters, valves, backflow preventers, air vents, and just about anything else. Some drip systems, where the emitters are attached to threaded outlets, also use risers to attach the emitters.
Why do they call it a riser room?
The control room is where the fire riser/sprinkler is set up. There is a fire pump and automatic sprinklers in that room. There are pipes and valves in this room that control the fire sprinkler.
What is in riser room?
It is a technical room (a control room) where the fire riser/sprinkler is set-up and controlled from. It is also said to be a room in a building where the fire pump and automatic sprinklers are located. This room contains pipes, valves, gauges, etc, to control the operation of the fire sprinkler.
How big is a fire riser room?
“Such rooms shall be of a size that will allow a minimum of 36-inch clearance around all portions of the fire pump assembly and in front of the fire alarm panel(s). All risers shall have a minimum of 36″ clear space at the front and 18″ on the remaining sides.”
What pressure do you pump through a FDC?
150 psi
All pumpers will pump their capacity at 150 psi at the pump, so increase the throttle slowly until your discharge pressure is at 150 psi while being careful not to run away from your water supply. If your pumper is equipped with a multi stage pump, place the pump in the volume stage.
How do sprinkler risers work?
As a fire sprinkler discharges, water flows out of the pipe, or branch line, it’s connected to. When that happens, water moves through the system riser to refill the branch line. These changes in flow and pressure are monitored at the riser by electronic devices called water flow switches.
Do fire sprinkler risers have control valves?
As such, two types of control valves are commonly found with fire sprinkler risers: In NFPA 13 systems, each water source (excluding water from the fire department connection) needs a listed indicating valve. In effect, this means that each commercial fire riser assembly has a control valve.
Where should a main drain be placed on a fire riser?
Neither standard specifies that drains be located at the fire riser—only that they are placed on the system side (downstream) of the control valve. Commercial (NFPA 13) systems may be drained at a series of auxiliary drains. But when properly placed and sized, a main drain can reduce the downtime required for inspection or repair.
Why do you need a test and drain valve for risers?
By combining the two, installers can reduce the riser’s size, the cost of materials, and the time required for installation. This 2” AGF Model 1000 Test and Drain Valve may serve as a test connection and the main drain on all NFPA 13, 13R, and 13D risers, including risers exceeding 4” in diameter.
What are the NFPA requirements for drains at fire sprinkler risers?
For more on these and other requirements for drains at fire sprinkler risers, see: NFPA 13 requires pressure gauges at the system main drain, main drains for floor control valves, and on both sides of a pressure-reducing valve (section 16.13.1, 2019 edition). Each gauge must have a thread connection of at least 1/4” in diameter.
