The deck gun might be a regional term, I have also heard it called the monitor, or the “Stang”, but we are talking about the engine mounted master stream. Most engine mounted master streams, fog, or a stack of smooth bore tips have a flow range of 500 to 1000 GPM.

What pressure do you pump a hand held solid bore nozzle?

Note that the standard rule is to use a pressure of 80 psi for a smooth bore tip nozzle in master stream operations. Higher pressures will create a broken and insufficient stream and an unstable operation in the elevated and portable modes, according to most fire stream books.

What pressure do you pump a fog nozzle?

Conventional fog nozzles have a fixed or selectable gpm setting. These settings correspond to a particular discharge orifice, or tip size. In order for a conventional nozzle with a fixed opening to operate at the correct nozzle pressure of 100 psi, the proper gpm flow must be supplied.

How far can a deck gun shoot?

The best use of the deck gun on interior fires is on first- and second-floor fires with the apparatus placed 25 to 30 feet from the building. Deck guns can be very useful at advanced fires inside one particular type of occupancy, the ground-floor store.

How much does a 15/16 tip flow?

A 15/16” might not be best because the lowest it flows in the operating range of 40-60 PSI is 165 GPM, but to keep a 150 GPM target flow you could under pump the 7/8” to 45 PSI NP and get 152 GPM.

What is the pump discharge pressure?

Fire Engine Pump Discharge Pressure (PDP) is the pressure set at the pump to achieve the desired pressure at the nozzle furthest from the pump (while considering the change in elevation and friction loss). Having a good understanding of pump discharge pressure is essential to becoming an effective fire engine operator.

Can you convert PSI to GPM?

PSI can’t be directly converted to GPM; these are two different units of measure. PSI measures pressure and GPM measures flow rate. But if other variables are known, the water’s flow rate in GPM can be calculated with the help of the Bernoulli equation for incompressible fluid and careful unit conversion.

Which is another term for a deck gun?

A deluge gun, fire monitor, master stream or deck gun is an aimable controllable high-capacity water jet used for manual firefighting or automatic fire protection systems.

What is the friction loss for 1 3 4 hose?

The friction loss in a 100-foot section of 1 3/4-inch line flowing 150 gpm is 27 psi.

What is a gun deck used for?

The term gun deck used to refer to a deck aboard a ship that was primarily used for the mounting of cannon to be fired in broadsides.

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What is a Minute Man load?

When implementing an aggressive fire attack, advancing hose is an important part of our job. … One such load is the “Minuteman” hose load, which is designed to aid the firefighter in getting the initial attack line in place with ease for any type of operation, be it residential, commercial, or high-rise.

What is PSI in fire fighting?

When looking at the specs and information on a pump, you will see two acronyms that are very important to a water pump – PSI and GPM. PSI stands for pressure per square inch, and GPM stands for gallons per minute.

Why does FDNY use smooth bore nozzles?

In the 1970s, FDNY engine companies used combination nozzles. … The solid-stream nozzle is able to extinguish the fire and to cool the surfaces and the surrounding areas sufficiently to reduce the heat without producing the large rapidly expanding volumes of steam. This significantly prevents steam burns.

What do you pump a booster line at?

When to pull it The limited fire flow from a booster line, generally around 50 to 60 gpm, was usually sufficient for a small fire.

What is a chafing block designed to do?

Chafing blocks are another piece of protective equipment for your LDH, particularly for lines coming into or going out of the fire apparatus pump. The vibration from the pump and the running apparatus motor create an abrasive action that’s damaging to LDH.

How much friction Do appliances lose?

In situations where total gpm is less than 350 gpm, the friction loss is insignificant. If total gpm is greater than 350 gpm, add 10 psi for friction loss in the appliance. Master stream appliances flowing at rated capacity use 25 psi per appliance.

What is more important PSI or GPM?

GPM is usually more important to contractors than PSI. Since most contractors use cleaning chemicals to do all of the cleaning, their job becomes one primarily of rinsing the dirt away.

How many PSI are in a gallon?

Pound/gallon (US)Psi/1000 Feet1 pound/gallon (US)51.948051948 psi/1000 feet2 pound/gallon (US)103.896103896 psi/1000 feet3 pound/gallon (US)155.844155844 psi/1000 feet5 pound/gallon (US)259.74025974 psi/1000 feet

What is the difference between GPM and PSI?

The PSI refers to the amount of pressure produced and GPM refers to the amount of water flow. … PSI (Pounds per Square Inch) refers to the amount of cleaning pressure the machine can produce. GPM (Gallons per Minute) is the amount of water that is coming from the machine.

Which pressure pump is best for home use?

• Kolerflo 120-Watt (Top Pick)
• Simer 3/4 HP Water Pressure Booster Pump.
• Grundfos 115-Volt Water Pressure Booster Pump.
• Davey Water Products Water Pressure Booster Pump.
• Burcam Dual Use Water Pressure Booster Pump.

Does pump increase pressure?

A pump does not create pressure, it only creates flow. Pressure is a measurement of the resistance to flow. In Newtonian (true) fluids (non-viscous liquids, such as water or gasoline), the term head is the measurement of the kinetic energy that a centrifugal pump creates.

How do I know what size pump pipe I need?

He said his rule of thumb was to size the discharge pipe to that of the pump’s discharge flange. For example, if the pump’s discharge nozzle was 150mm, he would use a 150mm nominal size pipe for his discharge header.

How do you calculate pump discharge pressure?

So, the discharge pressure is equal to the suction pressure plus the pump’s design pressure. The discharge pressure of the pump should be approximately equivalent to the total dynamic head (TDH) required by the system (tanks, pipes, elbows, valves, flanges and fittings).

What is the friction loss in 100 feet of 1 hose at 100 psi nozzle pressure?

Friction loss of a 100-foot, 1-inch hose, cotton-synthetic, at 15 gallons per minute, is typically 3 to 6 pounds per square inch.

How much pressure is behind 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 the nozzle pressure ratio?

The ratio of the nozzle total to static pressure ratio is called the nozzle pressure ratio (NPR). Nozzle Pressure Ratio: NPR = pt8 / p8 = pt8 / p0. Considering the energy equation for the nozzle, the specific total enthalpy is equal to the static enthalpy plus the square of the exit velocity divided by two.

How do you calculate psi from gallons per minute?

1. Measure the pressure inside the tank using a pressure gauge.
2. Subtract the atmospheric pressure from the tank pressure.
3. Multiply the result from step 2 by 2 and divide by the density of water.

What is nozzle capacity size?

What is the nozzle capacity? There are nozzles of different shapes and sizes. An important parameter for choosing the right nozzle for your appliance is the nozzle size. Generally speaking, a larger nozzle experiencing higher pressure has a higher flow capacity of liquid or gaseous fluid than a smaller nozzle.

What does the E stand for in the acronym Slice RS?

C – Cool from a safe distance. E – Extinguish. R – Rescue. S – Salvage.

What is the minimum number of firefighters needed to advance?

At least two fire fighters are required to advance and control a large handline, although one fire fighter can control a large handline if it is firmly anchored.

What does Slice RS stand for?

Before we answer the question, a little background: SLICE-RS is an acronym that outlines the latest firefighting tactics. It stands for Size-up, Locate the fire, Isolate the flow path, Cool from a safe distance, Extinguish, Rescue and Salvage at any time in the process.