There are three standard-sized hoselines that the fire service uses as a front line attack line: 1½, 1¾ and 2½ inch. The remaining situations might involve large master streams or deck guns. The key with selecting the correct size line is quite simply getting the right amount of water on the fire.
What is a fire hose nozzle called? A fog nozzle is a firefighting hose spray nozzle that breaks its stream into small droplets.
What are the main types of fire hose nozzles available?
- the solid bore.
- the single gallonage (sometimes called variable pressure/variable flow)
- the adjustable gallonage.
- the automatic or constant pressure.
How does a fire hose nozzle work? The pressure-control spring senses any increase or decrease in pressure within the nozzle. It then moves the baffle in or out to maintain a particular tip size necessary to keep the nozzle pressure at 100 psi. In effect, the nozzle is constantly changing tip size to match the water being supplied at that moment.
What are fire hose nozzles made of? Fire hose nozzles are exclusively manufactured to discharge high pressure water stream through fire hoses. These nozzles are made from heavy duty water-resistant materials, such as aluminum, brass and polycarbonate.
What are the types of nozzles?
- Nozzle.
- The Nozzle Tip is one of the most important and least expensive part of a spraying system. Adjustable nozzle.
- Double swirl spray nozzle.
- Selecting a spray nozzle.
- Hollow cone nozzles-Disc and core type.
- Flat fan nozzles.
- Floodjet nozzles.
- Adjustable nozzles.
What are the different sizes of fire hose? – Related Questions
How many types of fire nozzles are there?
The two main fire hose nozzle types we offer are deluge tip and smooth bore tip, but there are also economy, forestry, municipal, and Coast Guard-approved fire hose nozzles.
What is a fire nozzle?
A fire nozzle connects to a fire hose to deliver water or fire fighting foam to extinguish a fire. At Fire Product Search we care about your fire station’s or fire department’s fire fighting equipment and its ability to respond at short notice to the hazardous situations when fire fighting.
What is the nozzle pressure for a fire hose?
Typically, constant gallonage nozzles come in a variety of nozzle pressures, such as 50, 70, or 100 psi.
How much pressure is in a fire hose?
The usual working pressure of a firehose can vary between 8 and 20 bar (800 and 2,000 kPa; 116 and 290 psi) while per the NFPA 1961 Fire Hose Standard, its bursting pressure is in excess of 110 bar. (11,000kPa; 1600psi) Hose is one of the basic, essential pieces of fire-fighting equipment.
What is nozzle pressure?
What is the purpose of fog nozzle?
Spray from a fog nozzle is aimed at strategic areas of a burning room. The fog absorbs the heat generated by the fire and becomes steam, displacing the oxygen required by the fire and extinguishing the flame. A fog spray nozzle may be used indirectly or as a combination method of extinguishing fires.
What is nozzle?
Definition of nozzle 1a : a projecting vent of something. b : a short tube with a taper or constriction used (as on a hose) to speed up or direct a flow of fluid.
How far can a fire hose shoot water?
Between 75 feet and 100 feet straight up, depending on water pressure. In practice, though, firefighters on the ground rarely attempt to reach higher than 40 feet with hoses.
How do you measure a fire hose nozzle?
What is a Playpipe nozzle?
The underwriter’s playpipe is a straight-stream nozzle that discharges water streams over long distances. Playpipes feature a remarkably smooth, long pipe—often 30 inches or so—that straightens a stream of water while reducing turbulence. Firefighters originally used playpipes as outdoor hose nozzles.
What are the 2 types of nozzles?
The two most popular types for chemical applica- tions are the flat spray and hollow cone nozzles.
Does nozzle increase pressure?
In a convergent nozzle, there is an increase in velocity and a decrease in pressure, but we know that pressure is inversely proportional to area.
Which is the mostly used nozzle?
Round Nozzle It is the most used nozzle by the bakers around the world.
What is a combination fire nozzle?
Combination Fire Nozzle Types The automatic, or constant pressure, nozzle is designed to maintain a relatively constant pressure over a wide range of flows. The multi-purpose nozzle is a combination solid bore and fog nozzle, providing maximum reach and heat absorption.
What is a constant flow nozzle?
Multi-purpose Constant Flow Nozzle This multi-purpose nozzle is for hand watering applications, including: heavy watering, infield watering, syringing, cooling, equipment, and stadium washdown. Provides both wide fog and straight stream at an optimum flow rate of 35 GPM.
What is a fire hose valve?
What is a Fire Hose Valve? A hose or hydrant valve is used to control the flow of water at the scene of a fire or in an industrial setting. Different applications call for different fire hose valves, including deluge and dry riser valve types.
What is a nozzle box?
How is nozzle pressure measured?
The nozzle pressure can be measured with a gauge placed on a nozzle body. Simply purchase a quality gauge and a threaded nozzle cap, combine the two and install in place of a nozzle. A pressure gauge threaded into a nozzle cap can measure boom pressure.
How do you calculate nozzle size?
To find the correct nozzle size you need to know the flow of your system and the pressure you wish to achieve. First, select the column with the required pressure across the top, then read down the column to find the amount of flow of your system.
What is psi in fire fighting?
PSI stands for pressure per square inch, and GPM stands for gallons per minute. Both of these are vital in helping you choose what kind of firefighting pump you need, and it is very important to know about the PSI and GPM before buying any pump, regardless of the use.
How much nozzle reaction can a firefighter handle?
Flowing the same gpm, there is a nozzle reaction difference of 21 pounds at 100 psi; at 150 gpm, the nozzle reaction of 76 pounds is at the working limit of two firefighters.
What is Type 3 fire hose?
The Brigadier Type 3 layflat fire hose is principally used in the firefighting industry. However it is a multipurpose hose also commonly used within the shipboard and marine industry, on refineries and construction sites, in agriculture and irrigation, general industrial use and for all wash-down applications.
Why are fire hoses different colors?
The colors indicate the rated water-flow capacity of that particular hydrant: Red indicates a water-flow capacity of fewer than 500 gallons per minute (GPM). Orange indicates a water-flow capacity of 500 to 999 GPM. Green indicates a water-flow capacity of 1,000 to 1,499 GPM.
What is fire hydrant pressure?
Fire hydrants are flow-tested at a residual pressure of 20 psi; therefore, firefighters should understand the typical flow rates of fire hydrants at that pressure.
What is a fire hose valve?
What is a Fire Hose Valve? A hose or hydrant valve is used to control the flow of water at the scene of a fire or in an industrial setting. Different applications call for different fire hose valves, including deluge and dry riser valve types.
What is a Playpipe nozzle?
The underwriter’s playpipe is a straight-stream nozzle that discharges water streams over long distances. Playpipes feature a remarkably smooth, long pipe—often 30 inches or so—that straightens a stream of water while reducing turbulence. Firefighters originally used playpipes as outdoor hose nozzles.
What is a constant flow nozzle?
Multi-purpose Constant Flow Nozzle This multi-purpose nozzle is for hand watering applications, including: heavy watering, infield watering, syringing, cooling, equipment, and stadium washdown. Provides both wide fog and straight stream at an optimum flow rate of 35 GPM.
What is a handline in firefighting?
Handline – is a firefighting hose that is operated and maneuvered by firefighters (usually a 1 ¾” in diameter).
