- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
English Views: 0 Author: Site Editor Publish Time: 2025-09-02 Origin: Site
A large diameter hose carries lots of water or air. It is used for hard jobs like firefighting or big factories. It also helps with ventilation. These hoses are wide. They start at 3 inches and can be 6 inches or more.
Hose Type | Diameter Range (inches) |
|---|---|
Supply lines | 3.5, 4, 4.5, 5, 6 |
You should know the hose diameter. It changes how much water or air goes through. If the hose is too small, pressure drops. The job gets slower. If the hose is too big, it uses more energy. It is also harder to move.
Large diameter hoses help move lots of water or air fast. People use them in firefighting and in factories.
Picking the right hose size is very important. If the hose is too small, work will be slow. If it is too big, it can waste energy. Big hoses are also hard to use.
Always check both the inside and outside diameter of a hose. The inside diameter changes how much water or air moves. The outside diameter helps the hose fit with tools.
There are different hoses for different jobs. Suction hoses pull liquids. Layflat hoses are good for draining water.
Check and take care of your hoses often. Store them the right way and look for damage. This helps hoses last longer and keeps you safe.
A large diameter hose is easy to spot because it is very wide. Most of these hoses start at 4 inches across, but some can be as wide as 24 inches or more. The length can be different, but many hoses for firefighting or factories are 50 or 100 feet long. You use a large diameter hose when you need to move lots of water or air fast and safely.
Tip: The National Fire Protection Association (NFPA) makes rules for fire hoses. These rules help you pick the right hose for safety and good performance.
This table shows how hose size changes what it is used for:
Diameter (inches) | Application Description |
|---|---|
4 inches and larger | Used for water supply and relay operations, transporting water from sources to firefighting scenes. |
When you look at different hoses, you see supply lines are much wider than attack lines. Supply hoses are usually 3 to 6 inches wide. Attack hoses are smaller, from 1 to 2.5 inches. The next table shows how they are different:
Feature | Attack Hose | Supply Hose |
|---|---|---|
Diameter | 1 inch to 2.5 inches (25mm to 64mm) | 3 inches to 6 inches (76mm to 152mm) |
Function | Delivers high-pressure water directly to the fire | Transports large volumes of water from a source to firefighting apparatus |
A large diameter hose lets you move water with less friction loss. For example, a 5-inch hose can send water with almost no loss. A 2.5-inch hose loses much more water flow. This is why large hoses are important for safety and doing the job well.
You use a large diameter hose for tough jobs. Firefighters use these hoses to move water from hydrants or tanks to fire trucks. In factories, you use them to move water, chemicals, or other liquids far away. Some jobs include moving water at building sites or cooling big machines.
Here are some main ways to use large diameter hoses:
Firefighting: Moves water from a pressurized source to a pump. Some hoses, like the Big Water 7 ¼" LDH Hose, can handle high pressure for oil refinery or big tank fires.
Industrial supply: Moves lots of water or chemicals with little friction loss. The XLF™ Hose is made for fracking and does not get scratched or poked easily.
Water transfer: Moves water for farms, building sites, or flood emergencies.
Hose Type | Application Description |
|---|---|
Large Diameter Fire Hose | Efficiently moves water between a pressurized source and a pump, often used as a 'soft-suction' hose. |
The Big Water 7 ¼" LDH Hose | Engineered for high-pressure delivery of large water volumes, ideal for oil refinery and large tank fires. |
XLF™ Hose | Designed for fracking, it transfers large volumes of water with minimal friction loss and high abrasion resistance. |
Some hoses are made to deliver very large amounts of water at high pressure.
Others are built to lower friction loss, which is important for fighting fires at oil refineries or storage tanks.
Hoses made for fracking can also be used as main feeder lines because they do not get scratched or poked easily.
Note: Large diameter hoses have changed how people fight fires and work in factories. They help you move water faster and safer, which can save lives and protect buildings.
When you check a large diameter hose, you must know about inside diameter (ID) and outside diameter (OD). The inside diameter tells you how much water or air can go through the hose. This helps you control flow and pressure. The outside diameter shows if the hose fits with your clamps or fittings. You need both sizes to make sure the hose works for your job.
Hoses are always measured by the I.D (inside diameter or bore). This is the most important size. The outside diameter may be shown in a technical drawing, but it is not as important.
Here are some things to remember:
Inside diameter (ID) is key for flow and pressure.
Outside diameter (OD) matters for fittings and clamps.
If you pick a hose with the wrong ID, you might not get enough water or air. If you choose the wrong OD, the hose might not fit your tools. Always check both sizes before you buy or use a hose.
You can measure hose diameter in a few easy ways. For the inside diameter, use a Vernier caliper or an ID gauge. Clean the hose and make sure it has no pressure. Put the caliper’s inside jaws into the hose and open them until they touch both sides. Take more than one measurement to be sure you have the right size.
To check the outside diameter, use a Vernier caliper or a soft measuring tape. Make sure the hose is straight and not under pressure. Place the caliper around the hose at its widest part and read the number. If you use a tape, wrap it around the hose and divide the length by π (about 3.14) to get the OD.
Measuring Inner Diameter (ID):
Use a Vernier caliper or ID gauge.
Put the caliper inside the hose and open it until it touches both sides.
Take more than one measurement to be sure.
Measuring Outer Diameter (OD):
Use a Vernier caliper or soft tape.
Wrap the tape around the hose and divide by π to get the OD.
Make sure the hose is straight and clean.
Getting the right size helps you pick the best hose for your work. You can stop leaks, pressure loss, and fitting problems. Always measure before you connect or change a hose.
There are many kinds of large diameter hose for different jobs. Each kind is made to move water, air, or other things safely and fast.
Layflat hoses: You can roll these hoses flat when not using them. They are light and simple to carry. Layflat hoses are best for moving water out, like draining pools or fighting fires. They are not good for suction because their walls are thin and can fold in.
Suction hoses: These hoses have thick, strong walls. You use them to pull water or liquids from places like ponds or tanks. They work for both pulling and pushing liquids.
Discharge hoses: These hoses move water away from pumps or tanks. They are strong and bend easily, so they are good for many factory jobs.
Flexible ducting: This hose is great for moving air. You use it to send air in or out of buildings, tunnels, or factories. It bends well and fits in small spaces.
Composite hoses: These hoses have many layers to make them strong. You use them for strong chemicals or oil. They are used a lot in chemical plants and oil refineries.
Rubber hoses: These hoses are good for water, air, or hydraulic fluids. They last long and bend without breaking. You see them on farms, in factories, and in car shops.
Tip: Large diameter hose types can be from 2 to 60 inches wide. You can use them for big jobs like mining, building, or moving water in big emergencies.
The hose material is important for safety and how long it lasts. Each material has its own good points.
Material | Durability Characteristics | Flexibility Characteristics |
|---|---|---|
Neoprene | Stands up to chemicals and oil, not very toxic | Works well in hot or cold places |
Silicone | Very strong, keeps shape in high heat | Very bendy, good for chemical hoses |
Polyethylene | Tough, does not scratch or crush easily | Strong, good for busy places |
Coated Fabric | Very strong, does not burn easily | Bends well, handles high heat |
TPU (Thermoplastic Polyurethane): This hose is very tough and does not wear out fast. It stands up to chemicals and bad weather. TPU hoses are best when you need to stop scratches, like in flexible ducting or rough outdoor jobs.
PVC (Polyvinyl Chloride): This hose costs less. PVC hoses are good for lighter jobs. They can handle some chemicals but do not last as long as TPU.
Polyester: You find this in many layflat hoses. It makes the hose strong and helps it keep its shape.
Neoprene flex hoses: These hoses can handle oil, chemicals, and heat. Neoprene flex hoses are good for moving air or fumes in factories and for flexible ducting in air systems.
Note: Always keep your hose in a dry, clean place. Check it often for any damage. This helps your large diameter hose last longer and keeps you safe.
Flexible ducting is used to move air or get rid of fumes. It helps keep air clean and safe at work. Factories and workshops use it for lots of air flow. You can use it to bring in fresh air. It also pushes out hot, wet, or dirty air.
Here are some ways flexible ducting is used in ventilation:
Application Type | Description |
|---|---|
Air Movement | Used for air conditioning, ventilation, and exhausting hot, humid air from indoor environments. |
Fume Exhaust | Necessary for exhausting fumes from industrial facilities like paint and welding areas. |
Industrial Ventilation | High-thickness flexible exhaust hoses ventilate hot, humid, and polluted air in industrial settings. |
Industrial ventilation uses thick hoses to move hot, wet, and dirty air.
Flexible ducting helps carry dangerous gases away in factories.
Tip: Always look for damage before using flexible ducting. This keeps air clean and helps your team stay safe.
When picking flexible ducting, check for important features. The right hose makes work easier and helps the system run well.
Feature | Description |
|---|---|
Insulation | Built-in insulation helps maintain temperature, preventing heat loss or gain in the ducting. |
Flexibility | Flexible ducting is easy to install and can fit into tight spaces, making it user-friendly. |
Compressibility | The ability to compress allows for easier transportation and storage of the ducting. |
Proper Sizing | Ensuring the right size is crucial for effective air movement in large diameter applications. |
Insulation keeps air at the right temperature inside the hose.
Flexibility lets you bend the hose around corners or into small places.
Compressibility means you can pack and move the hose easily.
Proper sizing is important. If the hose is the wrong size, air flow may be too low or it may not fit your tools.
Flexible ducting is a simple way to move lots of air in many places. You can use it in new buildings, old factories, or emergencies. With good features, flexible ducting lasts longer and works better.
When you use a large diameter hose, you control how much water or air moves. The hose size changes the flow rate and pressure. A bigger hose lets more water move with less pressure loss. This is because water moves slower in a wide hose. Slow water does not rub much on the hose walls. Less rubbing means less energy turns into heat.
A small hose makes water move faster. Fast water causes more friction. This means you lose more pressure. If you make water go twice as fast, you lose four times more pressure. In high-pressure systems, a small hose wastes energy. It also makes pumps work harder. In firefighting, a five-inch hose can move 1,000 gallons each minute at about six psi for every 100 feet. It can also move 1,500 gallons per minute at 15 psi. Most of these hoses can handle up to 185 psi.
You might think a bigger hose is always best, but that is not true. The best hose size depends on your job. For a house fire, a 2 1/2-inch hose works well. This is because the water supply and hydrant spacing are enough. For a big building fire or long distance, you need a larger hose. In factories, bigger hoses move lots of water fast and stop delays.
Scenario | Preferred Hose Diameter | Reasoning |
|---|---|---|
Average dwelling fire | 2 1/2-inch | Hydrant spacing and water supply are manageable. |
Large dwelling or long driveway | Larger diameter | Needs more water and longer hose lays. |
Industrial setting | Larger diameter | High water volume needed for heavy-duty applications. |
Think about a few things before you pick a large diameter hose. Write down what you need, like pressure, temperature, size, and where you will use it. Think about how long you want the hose to last. Sometimes, a better hose costs more but saves money later. Make sure you can check and change the hose easily. Plan for the future, like higher pressure or more water flow. Always check safety rules for your job.
Size
Temperature
Application
Medium (what flows through the hose)
Pressure
Ends (fittings)
Delivery
Industry rules and product details matter too. Pick hoses that meet pressure and temperature needs for your job. Always follow safety tips, like flushing hydrants and checking couplings. Good training helps you and your team use large diameter hoses safely and well.
A large diameter hose moves big amounts of water or air fast and safely. You must choose the right size and material for your job. Picking the wrong hose can cause leaks, overheating, or early wear.
Issue | Explanation |
|---|---|
Leaks | Wrong size may not fit, causing leaks and safety risks. |
Efficiency | Incorrect size can slow flow and waste energy. |
Overheating | Small hoses create heat, which can damage the hose. |
Premature wear | Bad fit leads to faster hose damage and more repairs. |
The NFPA 14 standard helps you pick the right hose for your needs and keeps your team safe. Always check product details and follow safety rules before you buy.
A hose counts as large diameter if it measures 4 inches or more across on the inside. You use these hoses for jobs that need to move a lot of water or air quickly.
You should roll or fold the hose flat after use. Keep it in a dry, cool place. Check for damage before storing. This helps your hose last longer.
Yes, you can use some large diameter hoses for chemicals. Always check the hose material first. Look for labels that say “chemical resistant” or ask the supplier for advice.
A bigger hose lets more water move with less pressure loss. Water moves slower inside a wide hose, so you lose less energy. This helps you get more water where you need it.
Use a Vernier caliper for the most accurate measurement. Place the caliper inside the hose to check the inside diameter. Always measure when the hose is clean and not under pressure.