What is soft suction? Commonly accepted term for short length of large diameter soft hose used to connect a structural or wildland engine with a hydrant. No vacuum is involved because the hose is useful only when the engine receives water at a rate of flow in excess of the demand of the pump.
How does a 6 inch soft suction increase the efficiency of supply pumpers?
What is the purpose of a 6 inch hose?
How many feet of hose should I use for a fire hydrant?
How long is a 6 inch hose?
What is the difference between a 6-inch hose and a 4-inch hose?
Which intake has the least hydraulic loss?
What is the most efficient way to add flexibility to engine company personnel who routinely operate from fire hydrants?
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What is the function of a soft sleeve suction hose?
The soft sleeve hose transfers water between the fire engine and the water source; whether it be a hydrant, tanker, another engine, or a body of water.
What is a suction hose used for?
Drawing water from an external source A suction hose is used to draw water from an external source such as a groundwater well, a canal, a ditch, or a small lake. Suction hoses are used in combination with a self-priming pump such as a garden pump or a booster pump.
What is hard suction hose most commonly used for?
A hard suction hose is a special type of supply hose that is used to draft water from a static source, such as a river, lake, or portable drafting basin. It is designed to remain rigid and will not collapse when a vacuum is created in the hose to draft the water into the pump.
What is suction hose and delivery hose?
Suction and discharge hoses (also known as suction and delivery hoses) are one of the largest hoses we manufacture in terms of diameter, usually made from a flexible PVC material and containing a PVC helix.
How many types of suction hoses are there?
These are connected to the suction side of the pump. There are two types of suction hoses: The hard suction hose, and the flexible suction hose.
Can you use a garden hose for suction?
Once the hose is filled with water, it creates the siphon effect. The water molecules in the hose then “stick” together. That allows the water in the hose to flow out the free open end, dragging the water from the pond out behind them. The maximum height you can siphon water upward is about 34 feet.
Why do FDNY engines carry hard suction?
Hard suction is used when working at multiple alarm fires because a few pumpers may be drawing from the same main. Then the pressure coming out of those hydrants may be very low (50 to 100 p.s.i.).
What are the big black hoses on a fire truck?
Those hoses are part of a safety system that removes. the harmful diesel exhaust from the fire station. An exhaust fan turns on when the vehicle is started. and it evacuates the exhaust so it isn't breathed in.
What size hose do firefighters use?
There are three standard-sized hoselines that the fire service uses as a front line attack line: 1½, 1¾ and 2½ inch.
What is the difference between suction hose and discharge hose?
What's the Difference Between a Suction Hose and a Discharge Hose? The main difference between suction and discharge hoses is that suction hoses do not collapse when in use and are reinforced.
What are the types of hoses?
Types of HosesChemical Transfer Hoses. ... Working with chemicals can be very dangerous, so your hose must withstand the pressures you are putting upon it. ... Petroleum Transfer Hoses. ... Steam Hoses. ... Food & Beverage Hoses. ... Abrasive Material Hoses. ... Air Hoses. ... Water Hoses.More items...•
What is Type 3 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.
What is the difference between suction hose and discharge hose?
What's the Difference Between a Suction Hose and a Discharge Hose? The main difference between suction and discharge hoses is that suction hoses do not collapse when in use and are reinforced.
What is suction device?
A suction machine, also known as an aspirator, is a type of medical device that is primarily used for removing obstructions — like mucus, saliva, blood, or secretions — from a person's airway.
Which type of hose would be used in a drafting operation?
Semirigid rubber-braided, wire-reinforced draft hose has 80 percent better abrasion resistance than REELTEX® and provides good support in drafting operations.
What are pressure hoses?
Pressure washer hoses are specialized components used for cleaning in a variety of commercial industries. They can withstand high pressures between 3,000 PSI and 6,000 PSI, and they're built to handle extreme temperatures ranging from -40 C to 135 C.
Hydrant Flow Test Calculator | Hose Monster
Hose Monster has provided you with a hydrant flow test calculator on our website that measures the rated capacity at 20 psi of a fire hydrant.
Fire Flow Calculator - Calculator Academy
Enter the length, width, and height of an area of a building that is on fire into the calculator to determine the required fire flow.
Flow Capacities for fire hose - Forums - Firehouse Forums
Flow volumes of fire hose Woodie: There is no single flow volume for fire hose. It all depends upon how much pressure you are able to supply in getting the water through the hose line.
Required Pressure & Flow Through A Hydrant? - MeyerFire
I haven't had any experience doing site calculations before, but I'm curious how it works from a practical standpoint. Fire Flow is required by the International Fire Code here locally, and there's guidance (albeit not formally adopted) in Appendix B of the IFC for a total demand.
How does a 6 inch soft suction increase the efficiency of supply pumpers?
So 6-inch soft suctions increase the efficiency of supply pumpers by either increasing the total volume that the pumper can deliver or reducing the work load on the rig. This is primarily because of the tremendous reduction in friction loss compared to the traditional supply hoses used.
What is the purpose of a 6 inch hose?
The use of 6-inch hose when operating as the supply pumper will quickly yield higher fire flows from fire hydrants while simultaneously increasing the effectiveness of “less desirable” intakes as well as preferred intakes.
How many feet of hose should I use for a fire hydrant?
I am by no means advocating for departments to replace their entire 4-inch or 5-inch supply beds with 6-inch hose; rather, purchase one 25-foot section per rig (photo 1). Departments that make this simple acquisition will quickly see the benefits on the fireground. The use of 6-inch hose when operating as the supply pumper will quickly yield higher fire flows from fire hydrants while simultaneously increasing the effectiveness of “less desirable” intakes as well as preferred intakes.
How long is a 6 inch hose?
We will not debate this fact; however, it is important to compare apples to apples. When we talk about the use of 6-inch hose, we specifically mean a section of 6-inch hose that is no more than 25 feet in length. Although a 25-foot length of 6-inch hose when charged weighs just more than 300 pounds, we don’t normally tend to move this hose once it is in place because it is hooked from the steamer port on the hydrant to an intake on the engine. With 4- or 5-inch hose, the need to move several hundred feet of supply line laid down a street to enable other apparatus access to the scene is a very real possibility.
What is the difference between a 6-inch hose and a 4-inch hose?
The biggest advantage of using 6-inch hose for supply pumper operations is the tremendous reduction in friction loss compared to 4- and 5-inch hose. When compared to 4-inch hose, 6-inch supply lines have roughly 75% less friction loss per 100 feet at the same flow rate . 2 When we compare the friction loss characteristics of 5-inch hose with those of 6-inch hose, we see that 6-inch hose has approximately 40% less loss per 100 feet and at the same flow rate 2 (Tables 1 and 2).
Which intake has the least hydraulic loss?
On the contrary, side or main intakes generally have the least amount of hydraulic loss because their plumbing runs straight to the impeller. Using 6-inch hose with a side intake will yield the highest available fire flows when only one supply line is connected to the hydrant.
What is the most efficient way to add flexibility to engine company personnel who routinely operate from fire hydrants?
A fire department’s investment in 6-inch soft suction is the most efficient and effective way to add flexibility to engine company personnel who routinely operate from fire hydrants.
How does a suction hose work?
The hard suction hose works to draft water from below the pump, which prevents collapsing under vacuum conditions. The soft sleeve hose transfers water between the fire engine and the water source; whether it be a hydrant, tanker, another engine, or a body of water. 2. Attack Hose. When it comes to combating fires and having direct control ...
What are the different types of fire hoses?
As far as the basics go, here's what you should know about the different types of fire hoses: 1. Intake Hose. The intake hose is designed to connect the fire department's pumper to a portable pump or other water source. There are two types of intake hoses: the hard suction hose, and the soft sleeve hose. The hard suction hose works ...
What is an attack hose?
Attack Hose. When it comes to combating fires and having direct control over extinguishing them, attack hoses come into play. The 1" Booster Line is the most lightweight attack hose and can be handled by 1 firefighter. It is usually used for rubbish, brush, and wash-downs.
How many firefighters are needed to operate a 1 3/4 hose?
The 1 3/4" line is typically used for residential and vehicle fires, and needs 2-3 fire fighters to operate it. Lastly, the 2 1/2" line, which operates at 200-300gpm, is the most powerful attack hose that is used to combat commercial building and exterior fires. This hose takes 3-4 firefighters to operate, and is especially difficult ...
What is the size of a supply line?
Supply lines move large volumes of water at a low pressure, and they are made to be 3"-6" in diameter . 4. Extinguisher Line. The extinguisher line is used to transport extinguishing agents (liquid, gas, or powder) from the container where they are held to the nozzle where they are released.
What is the purpose of a supply line in a fire engine?
3. Supply Line. A supply line is used to supply a fire engine with water from another source. Supply lines are needed when the fire requires more water than the booster tank can hold, and the booster tank needs to be replenished from a continuous water supply.
How much pressure can an extinguisher line handle?
Conventional extinguisher lines can withstand pressures up to 400psi, while high-pressure lines can withstand up to 1250psi.
How does a 6 inch soft suction increase the efficiency of supply pumpers?
So 6-inch soft suctions increase the efficiency of supply pumpers by either increasing the total volume that the pumper can deliver or reducing the work load on the rig. This is primarily because of the tremendous reduction in friction loss compared to the traditional supply hoses used.
What is the purpose of a 6 inch hose?
The use of 6-inch hose when operating as the supply pumper will quickly yield higher fire flows from fire hydrants while simultaneously increasing the effectiveness of “less desirable” intakes as well as preferred intakes.
How many feet of hose should I use for a fire hydrant?
I am by no means advocating for departments to replace their entire 4-inch or 5-inch supply beds with 6-inch hose; rather, purchase one 25-foot section per rig (photo 1). Departments that make this simple acquisition will quickly see the benefits on the fireground. The use of 6-inch hose when operating as the supply pumper will quickly yield higher fire flows from fire hydrants while simultaneously increasing the effectiveness of “less desirable” intakes as well as preferred intakes.
How long is a 6 inch hose?
We will not debate this fact; however, it is important to compare apples to apples. When we talk about the use of 6-inch hose, we specifically mean a section of 6-inch hose that is no more than 25 feet in length. Although a 25-foot length of 6-inch hose when charged weighs just more than 300 pounds, we don’t normally tend to move this hose once it is in place because it is hooked from the steamer port on the hydrant to an intake on the engine. With 4- or 5-inch hose, the need to move several hundred feet of supply line laid down a street to enable other apparatus access to the scene is a very real possibility.
What is the difference between a 6-inch hose and a 4-inch hose?
The biggest advantage of using 6-inch hose for supply pumper operations is the tremendous reduction in friction loss compared to 4- and 5-inch hose. When compared to 4-inch hose, 6-inch supply lines have roughly 75% less friction loss per 100 feet at the same flow rate . 2 When we compare the friction loss characteristics of 5-inch hose with those of 6-inch hose, we see that 6-inch hose has approximately 40% less loss per 100 feet and at the same flow rate 2 (Tables 1 and 2).
Which intake has the least hydraulic loss?
On the contrary, side or main intakes generally have the least amount of hydraulic loss because their plumbing runs straight to the impeller. Using 6-inch hose with a side intake will yield the highest available fire flows when only one supply line is connected to the hydrant.
What is the most efficient way to add flexibility to engine company personnel who routinely operate from fire hydrants?
A fire department’s investment in 6-inch soft suction is the most efficient and effective way to add flexibility to engine company personnel who routinely operate from fire hydrants.
