What do you pump a smooth bore nozzle at?
The operating pressure of the smooth bore is a range from 40 to 60 pounds per square inch (psi), with 50 psi as optimal.
Which is an advantage of a smooth bore nozzle?
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.
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 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.
How much psi do I need for master stream?
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 master stream?
Master Stream Devices: Nozzle Pressure + 10 PSI for the device. Older devices with multiple intakes and stream straightener Nozzle Pressure + 20 PSI.
Can smooth-bore nozzles be used to apply compressed air foam?
Foam is a solvent made up of water, concentrate, and air when mixing in specific proportions. 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.
What is a benefit of class A foam *?
The benefit to the fire fighter is faster extinguishment, less water usage and less heat stress. The National Institute of Standards and Technology states that water treated with a Class “A” foam concentrate makes the water 3 to 5 times more efficient at fire extinguishment than untreated water.
Who invented the smooth bore nozzle?
The creation of the 1 3/16″ tip has been largely driven by the work of Oakland (CA) Fire Department Captain (Ret.) Dennis LeGear. Captain LeGear refers to the 1 3/16″ as the “missing” tip because of its absence as an option until recently.
What psi do you pump a deck gun?
In the case of master stream nozzles, the standard pressure is 80 psi. Unfortunately, the deck gun discharge gauges on fire apparatus do not take their pressure readings at the tip or even at the base of the master stream nozzle.
What do you flow a master stream at?
A master stream is used when flows surpass 350 gallons per minutes (gpm), becoming too difficult to be delivered from a handline operation because of nozzle reaction. The master stream, which is high in flow and usually a straight stream, is produced with a smooth bore tip or some type of combination nozzle.
What is a smooth bore fire nozzle?
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. Featured Smooth, or Solid Bore Fire Nozzles
Why choose Elkhart for smooth bore nozzles?
Elkhart offers a wide variety of discharge sizes to suit any need. Additionally, Elkhart’s stacked tips allow you to customize the smooth bore to meet your needs in the field. This pocket guide for smooth bore nozzles allows you to take discharge data on the go. Print, cut, fold, and tape to create your own pocket guide.
What type of nozzle has the greatest reach?
Often referred to as “the staple of American fire service,” smooth bore nozzles produce the greatest reach/gpm combination compared to other nozzle types. Smooth bore nozzles also use the lowest engine pump pressures, allowing for maximum reach.
What are smooth bore tips made of?
Engineered for performance and durability, all smooth bore tips are manufactured from aluminum alloy which is then hard coat anodized, the critical orifice of the smooth bore is recessed 1/8” back into the taper, and an aluminum bumper is machined around the outside of that same edge to prevent damage to the critical orifice edge.