What is a fog nozzle firefighter?
By. Firefighter Nation Content Directors. 2.29.2020. Facebook.
What is the purpose of fog nozzle?
Fog nozzles produce a cone-shaped stream of small water droplets. These droplets can more easily be converted into steam, which takes heat from the surrounding air and can even be used to push hot air out of a room. Straight streams discharge water in the shape of a column.
What are the different types of fire nozzles?
There are five basic nozzle types:
- the solid bore.
- the single gallonage (sometimes called variable pressure/variable flow)
- the adjustable gallonage.
- the automatic or constant pressure.
What are the differences between a fog nozzle and a smooth bore?
Smooth bore nozzles outperform fog nozzles in that they have more operational benefits, which include: greater reach and better penetration. less nozzle reaction except for the 50-psi fog nozzle. less likelihood of being clogged by debris.
What do you pump a fog nozzle at?
Since automatic nozzles are designed to operate at 100 psi nozzle pressure, this becomes the minimum starting point for any operation.
What are the two types of fire nozzles?
The Different Types of Fire Hose Nozzles
- Smooth-Bore Nozzles. Smooth-bore nozzles, a type of manual nozzle, have a simple, cylindrical design that doesn’t consist of any internal parts to facilitate the control of gallonage or pressure.
- Constant Gallonage Spray Nozzles.
- Automatic Spray Nozzles.
Which is a characteristic of fog nozzles?
Pattern. All styles of fog nozzles have a spray pattern adjustment. These nozzles can produce three different types of streams; the straight stream for long reach, the narrow-angle cone for advancing an attack line into a structure or fire room, and the wide-angle cone for protection and ventilation.
What is the easiest way to lower the nozzle reaction of a fog nozzle?
Nozzle reaction is the resultant lbf of pushback from the combined volume and pressure leaving the nozzle. The only way to alter nozzle reaction is to alter the volume [gallons per minute (gpm)] or the pressure (psi).
When was the fog nozzle invented?
1863
Fog Nozzle History The first United States patent for a fog nozzle was granted to Dr. John Oyston in 1863. During the late 1800s and continuing through the turn of the century, various articles appeared in fire service literature extolling the merits of spray streams.
Can fog put out a fire?
Oxygen is needed to combine with the burning fuel o sustain the fire. continue; thus the fire is extinguished. , it will be easy to understand why and how fog acts on a fire.
What are the 4 ways to extinguish a fire?
All fires can be extinguished by cooling, smothering, starving or by interrupting the combustion process to extinguish the fire.
What should the pressure be on a fog nozzle?
The nozzle shall have a rated pressure of 100 psi and a maximum operating pressure of 200 psi with dual flow settings of 10 gpm in straight stream and narrow fog and 30 gpm in straight stream and narrow fog. The nozzle shall have a one piece solid polymer pattern sleeve, Pyrolite inlet and 1 Year Warranty.
What kind of nozzle does a forestry firefighter use?
The Forestry Twin Tip Nozzle is the time tested Forestry nozzle. Made from high-quality cast aluminum with stainless steel internal parts, it comes standard with a 3/16-inch straight stream tip and a 3 GPM fog spray tip. The nozzle has a fog spray position, a straight stream position, and an off position.
Who was the inventor of the fog nozzle?
Fog Nozzle Origin & Development The late Andy Fredericks wrote that in 1863, Doctor John Oyston was granted the first U.S. patent for a fog nozzle. 1 Then during the 1920s, a considerable amount of research was completed worldwide on the effects of fire behavior and spray streams for interior fire attack.
Which is the best 1 gallon fire nozzle?
The 1″ ProVenger 1602 is the selectable gallonage fire nozzle which makes it perfect for wildland applications. A lightweight fog and straight stream nozzle with multiple gallonage settings.