To Schedule Please Call (919) 563-2226
Fire sprinkler system pipes
Inspection & Maintenance

Fire Sprinkler Systems

Inspection, Testing & Maintenance for all water-based fire protection systems per NFPA 25.

What is a Fire Sprinkler System?

A fire sprinkler system is a water-based piping system comprised of a stub-in (water supply), backflow preventer, fire pump (for an extra supplement of water pressure), riser (check valve), main & branch lines — providing calculated water flow to each strategically placed sprinkler head above you throughout your home or facility, giving the maximum fire protection.

Stub-in (Water Supply)
Backflow Preventer
Fire Pump
Riser / Check Valve
Main & Branch Lines
Sprinkler Heads
Fire sprinkler head
Wet system riser

Knowing what type of Riser you have will help us better assist you

Here is an example of a wet system riser. We perform inspection, testing, and maintenance on Wet Systems, Dry Systems, Deluge Systems, Pre-Action Systems, Antifreeze Systems, and Stand Pipe Systems. Nevertheless, we can handle the job both big and small, with any combination of fire sprinkler systems.

Wet SystemsDry SystemsDeluge SystemsPre-Action SystemsAntifreeze SystemsStand Pipe Systems
Spotlight

Pre-Action System

This is your typical Pre-Action System known as a Total Pac, found mostly covering data/computer centers for fire protection.

Pre-action fire suppression system

Systems We Service

Wet Pipe Systems

The most common type of fire sprinkler system. Water is held in the pipes at all times and discharges immediately when a sprinkler head activates due to heat. Ideal for heated spaces where freezing is not a concern.

Dry Pipe Systems

Pressurized air or nitrogen holds water back until a sprinkler activates. When a head opens, the air escapes and water fills the pipes to suppress the fire. Ideal for unheated spaces like parking garages and attics.

Deluge Systems

All sprinkler heads are open and water is released simultaneously when the system activates via a detection device. Used in high-hazard areas such as aircraft hangars and chemical storage facilities.

Pre-Action Systems

Require two independent events before water is released — a detection signal and a sprinkler head opening. Ideal for data centers, computer rooms, and other sensitive environments where accidental discharge must be avoided.

Antifreeze Systems

A wet pipe system that uses an antifreeze solution in portions of the piping exposed to freezing temperatures. Allows wet-pipe protection in areas that would otherwise require a dry pipe system.

Stand Pipe Systems

A network of piping and hose connections that allows firefighters to connect hoses at various points throughout a building. Required in multi-story buildings and large floor-area structures.

When is it time for us to come visit you?

5-Year Internal Inspection

All fire sprinkler systems are required to undergo a 5-Year Internal Inspection to check for micro-organisms or debris that could stop a system from performing correctly.

There is an inspection tag located on the riser that is required to be attached at the end of every test of the fire sprinkler system — it lists the past dates of inspections. All types of water-based fire protection systems are due at annual intervals for inspection and testing. Some inspections and testing need to be performed on more frequent occasions, such as semi-annual or quarterly intervals, and other various maintenance services throughout the year as described in NFPA 25.

We perform any of your services per NFPA 25, which is the standard for Inspection, Testing & Maintenance of Water-Based Fire Protection Systems.

Quarterly

Select components

Semi-Annual

Select components

Annual

Full system

5-Year

Internal inspection

In God We Trust

Thank You for Choosing Hill Fire Protection