Sprinkler Systems

Sprinkler systems are designed to minimize fire damage and save buildings. Megacity works on wet, dry and pre-action systems. In addition, we inspect fire pumps and backflow preventers.

Megacity Fire employs highly trained individuals who are qualified to perform inspections and maintenance on all types of sprinkler systems. In order for a sprinkler system to perform properly in the event of a fire, it must be maintained through regular inspections, maintenance and testing by a licensed technician. Megacity performs inspections, repairs and alterations on wet sprinkler systems, dry sprinkler systems and pre-action systems. Megacity Fire completes quarterly, semi-annual and annual testing of all types of sprinkler systems in accordance with NFPA 25.

Wet Sprinklers

Wet sprinkler systems are the most common type of fire sprinkler systems in the market. These systems use automatic and closed-type sprinkler heads connected to a water filled piping system. Heat from a fire activates a sprinkler head to release water.

Dry Sprinklers

Dry pipe sprinkler systems are installed in places where the ambient temperature may be cold enough to freeze the water in a wet pipe system making the system inoperable. Dry pipe systems are most often found in unheated buildings, in outside canopies attached to buildings, attic spaces of buildings or in refrigerated coolers. Dry pipe sprinkler systems do not have water in the piping network until the system activates.

Pre-Action Sprinklers

Pre-action sprinkler systems are hybrids of wet and dry systems and are designed for locations where accidental activation is unwanted. Pre-action systems are most often found in data centers. The two main types of pre-action systems are single interlock and double interlock.

Fire Pumps

A fire pump is part of the sprinkler system’s water supply that is powered by electric or diesel engine. The pump intake is either connected to the public underground water supply, or a static water source (e.g. tank or lake). The pump provides water flow at a higher pressure to the sprinkler system risers and hose standpipes. The fire pump starts when the pressure in the sprinkler system drops below a threshold. The sprinkler system pressure drops significantly when one or more sprinkler heads are exposed to heat above their design temperature and opens releasing water. Fire pumps are needed when the local water supply cannot provide sufficient pressure to meet the hydraulic design requirements of the fire sprinkler system. Megacity Fire completes fire pump testing with our own fire pump test trailer in accordance with NFPA 20.

Backflow Preventers

A backflow prevention assembly is used to protect water supplies from contamination or pollution due to backflow. Megacity Fire is licensed to complete both domestic and fire sprinkler backflows in your facility. Megacity Fire can complete the annual recertification, repair or replacement of all types of backflow preventers. We can complete your backflow inspections and repairs and submit the test reports to the appropriate jurisdiction.