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Pre-Action Fire Sprinkler Systems

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Adequately protecting your building from fire hazards requires a multifaceted approach. One of those approaches should be to install a fire sprinkler system. No other fire suppression method is more effective at saving lives and reducing property damage. But what if your building contains delicate equipment or artifacts that could be harmed just as badly by water as by fire? In this scenario, an accidental discharge could be devastating.

When you need an added level of protection against inadvertent sprinkler activation, consider a pre-action system. Fire Pros can perform the fire sprinkler installation you need to ensure your facility is protected from fire and water.

Find out more about pre-action fire sprinklers to see if they’re the right solution for you. Then, contact Fire Pros for information about getting a system installed in your building.

What Is a Pre-Action Fire Sprinkler System?

Under normal conditions, no water is contained within the pipes of a pre-action system, which is the same as dry pipe fire sprinklers. The difference comes when the flame, heat, or smoke detection system activates.

Instead of sending water directly onto the flames below, an electronically operated valve, called a pre-action valve, opens. This converts the dry piping into a wet pipe system. After this initial phase, high heat must then trigger individual sprinkler heads before the water discharges. In a sense, the pre-action fire sprinkler works to convert a dry pipe system into a wet pipe system quickly and effectively, and allows fire sprinklers to be activated independently.

Some pre-action systems are installed with a double interlock where pressurized air or nitrogen is added to the piping. This serves two purposes: to monitor the pipes for leaks and to hold water in case the detectors operate mistakenly. Freezer warehouses are the most common application for this feature.

Pre-action fire sprinklers are most often installed in water-sensitive environments, such as computer centers, fine art storage areas, libraries of rare books, and archival vaults. Non-water fire suppression is also available for these special hazard areas.

Important Installation & Maintenance Considerations

Before you install pre-action fire sprinklers, understand that they have additional components that increase the complexity of the system. This results in higher installation costs and more maintenance requirements. In addition, specific size limitations may impact the ability to modify the system later on.

Because these systems are so complex, maintenance is imperative. To comply with NFPA 25 Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems, keep up with the following requirements:

  • Inspect gauges weekly to check that the air and water pressures are correct.
  • Perform a yearly trip test on the pre-action valve following the manufacturer’s instructions.
  • During the trip test, inspect and clean the pre-action valve. Repair or replace any parts as needed.

Schedule Pre-Action Fire Sprinkler Installation in MI

While pre-action sprinklers could be the best fire protection method for your special hazard building, it takes careful planning and expert installation to provide the results you want. Fire Pros will assess your site and recommend the most suitable solution to meet your needs. Whether you opt for pre-action sprinklers or another method, we can design, install, and service your fire protection system in the years to come.

To begin the process of installing pre-action fire sprinklers in Michigan, please contact Fire Pros at (866) 560-6872.

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George was great! walked me through what was going to be serviced and inspected, explained how the system works and showed me how to pull the ansul pull station. Walked me through the inspection before signing off. Very personable, interacted with the Team while he was here.


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Robert G.

Robert G.

Near Wyoming Ave, Detroit, MI 48238
Tyler H.

Tyler H.

**EMCOR PAPERWORK ATTACHED: Troubleshot NAC output. Seven old horns need to be replaced. I suggest Gentex.

Near Leonard St NE, Grand Rapids, MI 49525
George S.

George S.

Near Goldsmith, Plymouth, MI 48170
Brandon  F.

Brandon F.

Inspected 14 fire extinguishers

Near Clay Ave SW, Grand Rapids, MI 49548
Robert G.

Robert G.

Near Chrysler Dr, Detroit, MI 48211
Alex R.

Alex R.

Completed Annual Fire Extinguisher and Emergency light Inspections for 2021

Near Middlebelt Rd, Farmington Hills, MI 48334
Zachary  B.

Zachary B.

Near Alpine Ave NW, Comstock Park, MI 49321
Art L.

Art L.

Portable Extinguishers Inspection

Near E River Rd, Muskegon, MI 49445
Robert G.

Robert G.

Near Mack Ave, Detroit, MI 48215
William S.

William S.

Near Industrial Park Dr, Sault Ste. Marie, MI 49783
Mike R.

Mike R.

This quote is to replace phone lines to Fire Alarm panel with a Cellular communicator due to multiple phone line failures at your location.

Near Diamond Ave NE, Grand Rapids, MI 49505
Alex R.

Alex R.

Corrected Deficiencies from recent inspection Completed 6 year Maintenance on 15 ABC Extinguishers

Near W 10 Mile Rd, Novi, MI 48375
David H.

David H.

Near Center Industrial Dr, Georgetown Township, MI 49428
John  R.

John R.

Near 118th Ave, Martin, MI 49070
John H.

John H.

Per Seth Houk - Needs (1) 5#CO2 Installed in the small Mechanical Room. Requirement from their Insurance Company. Needs to be completed before 4/19 Portable Extinguishers Service Call

Near US-31, Petoskey, MI 49770
George S.

George S.

Near Merriman Rd, Garden City, MI 48135
Robert G.

Robert G.

Near Conner St, Detroit, MI 48213
Sean W.

Sean W.

Near W Eisenhower Pkwy, Ann Arbor, MI 48103
Tyler H.

Tyler H.

EMCOR PAPERWORK ATTACHED: An Abnormal test was reported. Maintenance is required at site.

Near E Saginaw St, East Lansing, MI 48823
Art L.

Art L.

Portable Extinguishers and Kitchen Suppression Inspection

Near Diana St, Ludington, MI 49431
John H.

John H.

Portable Extinguishers Inspection Monthly Fire Extinguisher Inspections (63 FE)

Near Fochtman Industrial Dr, Petoskey, MI 49770
Matt S.

Matt S.

Portable Extinguishers Inspection

Near Long Lake Rd, Belding, MI 48809
Zachary  B.

Zachary B.

Near Marcell Dr NE, Rockford, MI 49341
Gary B.

Gary B.

Annual Kitchen Suppression System Inspection (PCL 3.5 + 2.4gal AB Tandem) Annual Fire Extinguisher Inspection (8 FE) Kitchen Suppression and Portable Extinguishers Inspection

Near Plainfield Ave NE, Grand Rapids, MI 49525
Robert G.

Robert G.

Near W Seven Mile Rd, Detroit, MI 48221