What advantage does a fog stream nozzle have over a smooth bore nozzle?

The biggest difference between them is that the flow rate of the selectable-gallonage fog nozzle is adjustable. An adjustable ring is designed for the nozzle operator to adjust the flow rate with a twist of the gallonage selector, which is a distinct advantage over the fixed-gallonage nozzles and smooth bore nozzles.

Which is an advantage of a smooth bore nozzle?

Typically, the smooth-bore nozzle produces the greatest reach/gpm combination of all nozzles while at the same time using the lowest engine pump pressures.

Can smooth bore nozzles be used to apply compressed air foam?

For applications of compressed air foam system (CAFS), a full-flow ball valve or smooth-bore nozzle can get the job done because larger discharge usually causes drier foams.

Which is an advantage of a straight stream over a fog stream?

What is an advantage of a straight stream over a fog stream? Longer reach. crews are working inside the building.

What do you pump a smooth bore nozzle at?

Smooth bore nozzles generate effective streams at nozzle pressures as low 30 PSI, but the stream will degrade at pressures over 60 PSI.

What is a disadvantage of using fog nozzles to apply fire fighting foam?

What is a disadvantage of using fog nozzles to apply fire fighting foam? Select one: a. Operator error is more likely to produce lower quality foam.

What pressure do you pump a smooth 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.

How do you calculate gpm on a smooth bore nozzle?

through a window and strike the ceiling with enough force to splatter well. For example, a one-inch smooth bore tip will have a dis- charge of 210 gpm: 29.72 × 12 × 7.07 = 210 gpm.

What type of foam Cannot be used with fog nozzles?

Cards

Term 4 ways that firefighting foam extinguishes or prevents fire:	Definition separating cooling smothering penetrating
Term Fog nozzles cannot be used with ____ or ____ foams	Definition protein of flouroprotein foam
Term Fog nozzles may be used with ____ on ____ fires	Definition ARAFFF on Hydrocarbon fires

What percentage of finished foam is water?

In other words, depending on the type of foam, or the type of fuel, foam concentrate is designed to be mixed with 99 parts water to 1 part concentrate (1 % foam concentrate), 97 parts water to 3 parts (3% foam concentrate), or 94 parts water to 6 parts concentrate (6% foam concentrate).

Which is a characteristic of smooth bore nozzles?

Smooth bore nozzles also use the lowest engine pump pressures, allowing for maximum reach. Smooth bore nozzles are often referred to as solid bore nozzles because they produce a solid stream to provide maximum reach and penetration to the seat of the fire.

What is a disadvantage of using fog nozzles to produce finished foam?

What is a disadvantage of using fog nozzles to apply fire fighting foam? Operator error is more likely to produce lower quality foam.

What foams Cannot be used with fog nozzles?

What is the difference between smooth bore and automatic fog nozzle?

Unlike the smooth bore nozzle, the fixed-gallonage fog nozzle, and the selectable-gallonage fog nozzle, the automatic fog nozzle does not provide a known flow rate at a specific nozzle pressure. Instead, the automatic nozzle provides a known flow rate range at a specific nozzle pressure.

What size smooth bore nozzle do I Need?

Below are some of the most commonly used smooth bore nozzle tip sizes and their associated flow rates: 7/8 inch – 161 gallons per minute (gpm) 15/16 inch – 185 gpm 1 inch – 210 gpm

What is the difference between fixed-gallonage fog nozzle and selectable fog nozzle?

The selectable-gallonage fog nozzle is similar to the fixed-gallonage fog nozzle in that if the pump operator provides the proper nozzle pressure, the nozzle will provide a known flow rate. The difference between this nozzle and the fixed-gallonage nozzle is that while the nozzle will provide a known flow rate, the flow rate is adjustable.

What are the benefits of a fog nozzle?

These benefits include greater reach and penetration, less nozzle reaction (except when compared to a 50-psi fog nozzle), reduced susceptibility to clogging by debris, and an increased capability to produce an adequate flow rate during low-pressure situations.