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 ProTalk - Industrial Hose & Fittings
Q. Is it okay to mix and match different brand names of hydraulic hose, fittings and crimpers?

Q. My air hose is constantly sitting in puddles of oil and water. Is there any way to extend the life of the hose?

Q. What can I do to get maximum life out of my hydraulic hose assemblies, and why do they sometimes fail?

Q. I have hydraulic hose failures because of the wearing away of the outer cover of the hose. What steps can be taken to minimize abrasion?


Q. Is it okay to mix and match different brand names of hydraulic hose, fittings and crimpers?
A. Different brand names cannot be used together because hydraulic hose, fittings and crimpers are designed and engineered as an assembly system. Doing so can create a dangerous situation. In addition to the dangers involved, mixing and matching brand names will void the manufacturers warranty and could also exclude manufacturers from liabity should someone get injured from a failed hose assembly.

Q. My air hose is constantly sitting in puddles of oil and water. Is there any way to extend the life of the hose?
A. There are several hoses available with top quality covers to accommodate harsh environments. Goodyear’s Gorilla hose is a premium quality, multipurpose hose with a cover that is highly resistant to oil. It has a wide range of applications in factories, construction, agriculture, quarries, mines, railroads, the oil and gas industry, and shipbuilding. All sizes are rated at 500 psi (3.4 Mpa) maximum working pressure. Nonconductive, minimum electrical resistance greater than one (1)megaohm per inch of hose length at 1000 Volts DC.

Q. What can I do to get maximum life out of my hydraulic hose assemblies, and why do they sometimes fail?
A. Hose leakage or failure many times occurs at the end fitting. It may be that the crimp specifications were not followed properly. Also, check the system for pressure spikes. Make sure that the pressure surges do not exceed 25 percent of the hose rated maximum operating pressure. If bulges or bubbles occur on the cover, a leak is taking place within the inner layers. This hose should be replaced. High oil temperatures will quickly harden the inner tube. When pressure flexes a stiff tube, cracks will occur, causing failure. Use a hose rated for the actual temperatures of the fluid conveyed.

Q. I have hydraulic hose failures because of the wearing away of the outer cover of the hose. What steps can be taken to minimize abrasion?
A. Abrasion is a frequent cause for hose failure. When the hose cover abrades down to the wire reinforcement, the wire is exposed to the elements. This in turn will result in corrosion of the wire, weakening the wall of the hose, resulting in premature hose failure. There are various steps that can be taken to reduce abrasion:
1. Route the hose on the machine so it will not rub on metal edges or on another hose. Clamping the hose in strategic places will also minimize rubbing. Never clamp a hose on a bend. Clamps should be about 1/32nd inch smaller than the OD of the hose.
2. Select a replacement hose that has an abrasion resistant cover. These hoses are offered by Aeroquip, Weatherhead and Goodyear. They are extremely tough and will outlast conventional coverings.
3. Incorporate an abrasion resistant sleeve in the hose assembly. These sleeves are available as coiled springs, coiled strap steel, spiraled plastic and nylon (cordura) sleeves. The spiraled plastic and nylon sleeves can also be used for “bundling” hoses.




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