Large Diameter Fire Hose

A large diameter hose is:

• Generally longer than smaller diameter hose, with 100 feet the standard length. Short or pony lengths are used for hydrant hook-ups to charge pumper units.
• Manufactured using techniques that include the extrusion of nitrile rubber in a thru-the-weave process, or by laminating the nitrile rubber cover and liner. In either case, the entire length of the fire supply hose is seamless.
• Heavier than smaller diameter hose to deliver more water volume over longer distances.

What is Friction Loss in LDH Fire Hose?

LDH fire hose is big-flow, low-pressure hose, which is both its defining feature and the reason for its popularity.

Friction loss in large diameter fire hoses is entirely dependent upon flow, not pressure. So the more capacity (GPM) a hose can carry, the less force (PSI) is needed for the delivery. This type of hose can then deliver a greater water volume over greater distances, with less friction loss than smaller diameter hose.

With large diameter supply hoses on your engines, your firefighters can deliver big water to the fire scene with less labor and less equipment.

LDH Hose FAQs

What is LDH fire hose?

In firefighting, a flexible LDH fire hose is a Large Diameter Hose that moves water more efficiently between a pressurized water source and a pump supplying attack lines.

What is an LDH hose?

A rubber covered LDH hose can also be used in industrial applications for soft suction.

What size is a Large Diameter Fire Hose?

Large Diameter Hose comes in 4-inch, 5-inch, and 6-inch diameters.

How long is LDH hose?

A standard large diameter fire hose length is 100 feet. Short or pony lengths are available.

Need a special fire hose length? Rawhide can help. Fill out our Custom Fire Hose Builder form, and we’ll supply your custom solution.