Choosing Hydraulic Hoses

Choosing Hydraulic Hoses

When you have to choose hydraulic hoses, make sure you know what you’re looking for. Depending on the type of hose you’re looking for, there are several different types available, including High-pressure, flexible, and field-attachable hoses. Choose a hose that meets the necessary specs for your needs, including the type of material, chemical compatibility, and application. If you need more information, you can find an article on the topic in our library.

High-pressure hydraulic hoses

The middle layer provides the necessary strength while allowing for flexibility. The outer layer protects the hose from sharp objects or foreign matter. These hoses are also equipped with fittings that can handle high pressures.

High-pressure hydraulic hoses are fitted with special fittings to prevent leakage and maintain pressure in a hydraulic system. The type of fittings used to install high-pressure hoses varies according to the country, technology, and a number of other parameters. Some of the common types of fittings are: interlock, CS, and universal series. The former is primarily used for braided hoses, while the latter is used for winding-type hoses.

In addition to high-pressure hoses, braided hydraulic hoses are also commonly used in hydraulic systems. They can withstand high temperatures, as well as high pressures. The structure of braid hoses consists of a metal cord covered with a layer of rubber. Operating temperature ranges range from -40°C to +100°C. In addition to braid hoses, there are three types of high-pressure hydraulic hoses: double-braided, single-braided, and braided.

The flexible pipeline that makes up high-pressure hydraulic hoses is made of synthetic rubber or thermoplastic. It can withstand high pressures and flexibly bend for easy installation. These hoses are also available in different lengths and inside diameters. Some of them also come with fittings, which make them flexible and safe to connect with hydraulic equipment. This article has introduced high-pressure hydraulic hoses. Now, let’s examine their different uses.

Flexible hoses

When selecting a new hose for your hydraulic system, make sure to consider its chemical and temperature compatibility. Chemical compatibility can be affected by a variety of factors, including fluid concentration and temperature. Although most hydraulic hoses are compatible with petroleum-based oils, biodegradable fluids can cause problems for some hoses. Similarly, the working pressure should be higher than or equal to the maximum system pressure. Any spikes in pressure above or below the published working pressure can significantly shorten the life of a hose.

While pressure and temperature-related performance are the most important factors for hydraulic hoses, flexibility is also an important consideration when choosing a hose. Flexible hydraulic hoses are made of synthetic rubber with multiple reinforcement windings that make them highly durable. Reinforcement windings can be metal, fiber, braided, or spiral wound. When choosing a hose, you need to consider the use of flexible hoses to ensure the safety of your equipment.

The largest disadvantage of a hose is that it can only bend one way. In contrast, a tube can bend many different ways and is therefore more expensive than a hose. However, this limitation is largely due to the limited length of tubing. However, the length of a tube is significantly longer than a hose and it is more difficult to store and ship.

Field-attachable couplings

Another benefit of field-attachable couplings is their versatility. The main difference between them and the standard ones lies in the type of hose and fitting. In general, they are reusable and compatible with most hydraulic hoses. In addition to reducing downtime, they are easy to assemble without special tools. Depending on the type of coupling, they are suitable for medium-pressure and high-temperature hoses.

There are several types of couplings for hydraulic hoses. One type is the thread coupling, which consists of two parts with an internalised thread. The tapered threads on the male and female parts deform under pressure to provide a tight seal. Another type is the mated angle coupling. This is another type of coupling that uses a NPSM joint.

Chemical compatibility

When purchasing a hydraulic hose, it is important to check its compatibility with the fluid being used. A chemical compatibility chart can help you determine whether a hose will work in a particular application. Chemical compatibility varies by fluid type, concentration, and temperature. Petroleum-based hydraulic fluids are generally compatible with most hoses, but newer, biodegradable fluids may cause compatibility problems.

Moreover, the pressure in the hydraulic hose must be equal to or greater than the maximum pressure in the system. If pressure spikes exceed the published working pressure, it can drastically shorten the hose’s life.

When choosing a hose, consider the temperature of the fluid and its temperature. The temperature range in between these materials is 70 deg C. If you need to use a hose with a higher operating temperature, consider the chemical compatibility of its outer cover. If you are using the hose for extreme service conditions, contact the sales department of the manufacturer.

The recommendations for hydraulic hoses are based on internal methodology, laboratory bench tests, and field experiences. Users should test these hoses in the field and follow the recommendations based on the tube compound and literature data. In addition to these recommendations, users should conduct their own testing to ensure that the hoses work for their intended purpose.

The type of oil used in hydraulic hoses must be compatible with the fluids. If the fluids are gaseous, it can leak from the hose’s pores. This can occur through permeation or effusion. Pin-perforated covers can prevent fluid from building up under the cover. Chemical resistance tables list common chemicals and their relative resistances to the materials. Chemical compatibility is vital for the safety of your hydraulic hose.

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