Ultra High Pressure
Fire Supression

The principle of our ultra-high pressure (UHP) systems is remarkably straightforward.  Simplistically,  very energetic but small water droplets give you more surface area to combat fire. This is how UHP works:

  1. We boost the pressure of water to the range of 1200 to 1400 psi.  Compare this to 100 to 200 psi used in low-pressure systems.
  2. Pressurized water is propelled through the hand-line nozzle for optimal delivery and control. This creates a mass of micro droplets.
    • Micro droplets create a much greater surface area as compared to the larger low-pressure drops.  You have more contact with flames. And you cover a greater surface area, which enables you to quickly reduce the fire’s thermal energy.
    • Micro droplets convert to steam more quickly. Steam displaces oxygen that’s fueling the fire. 
    • Converting water to steam draws energy from a fire, thus extingushing more quickly.
    • Both positive ventilation and hydraulic ventilation can be achieved with our UHP systems. Heat, gasses and smoke are pulled out of a structure in fraction of the time it takes with traditional apparatus, increasing visibility and safety.
    • Micro droplets reach confined spaces that large drops can’t reach.

It's like the fire just disappears

HMA Fire, in conjunction with the Air Force Research Lab at Tyndall Air Force Base in Panama City, Florida, tested various flows at low pressure and ultra-high pressure (see chart to the right) in a 3,500-square-foot pit containing 380 gallons of JP-8 fuel.  The results?

  • HMA Fire UHP consistently and fully extinguished more fire
  • UHP consistently used 1/10 of the water
  • At 20 gpm, 1200 psi, UHP beat the best low pressure time by 50 percent, using 85 percent less water
  • HMA Fire UHP has optimized performance supported by tested results.

The conclusion?  UHP, at 20 gpm is the optimal flow, blowing all low-pressure systems out of the water.

Test Results - Tyndall AFB Jet Fuel Pit

Test Results - Tyndall AFB Jet Fuel Pit

The heat simply gets sucked out of the room

Smaller water droplets, greater surface area and rapid steam conversion help UHP extinguish fire and reduce room temperatures in significantly less time.


UHP vs. Low Pressure in room content fire

UHP vs. Low Pressure in room content fire

Pulling energy from the fire through steam conversion.

 If a fire is expending energy on something other than burning, it will go out quicker.  The chart to the right shows that it take 1 calorie of energy to raise the temperature of water by 1 degree Celsius. It takes 540 calories to change 100 degree Celsius water to steam.  Steam conversion burns 539 more calories than non-steam conversion.  The microdroplets found in a UHP stream convert to steam quicker and more efficiently than low pressure large droplets.