High pressure hose: know the product's features and functions

high pressure hose

Without a doubt, the hydrojetting method it is full of advantages for cleaning equipment, preparing surfaces and clearing pipes, boilers, heat exchangers and several other machines that need to be thoroughly cleaned. To guarantee the efficiency of this service, some accessories are essential, such as, for example, the high pressure hose.

In fact, the product is the subject of this text, which will reveal its characteristics and functions.

So, if you want to know more, read on and get your questions answered!

What is a high pressure hose?

First, the high pressure hose is essential to perform the jetting.

It is important to note that hoses can have different lengths, diameters, connections and working pressures. Regarding the characteristics of the item, it is worth mentioning that each application requires a type of hose to be able to better fulfill the desired objective.

Depending on the working pressure, hoses can have 3 or more layers made up of different materials. Hoses typically have an inner layer of flexible, impermeable material (such as rubber), one or up to 12 braided layers of reinforcement made of metallic or composite material, plus a last outer layer to protect the braided layer from oxidation and abrasion with the floor.

Thus, the higher the operating pressure, the greater the number of layers braided in a hose.

In addition, as it is flexible, this type of hose facilitates the hydrojapist's job during cleaning.

According to the recommendations of the WJTA (Water Jet Technology Association), the high pressure hose is a flexible item, which connects two components and sends the flow of water to the gun or nozzles.

Following international specifications, high pressure hoses are manufactured to withstand 2,5 times their nominal working pressure. During assembly, the hoses are tested repeatedly at the condition of 1,5 x the indicated operating pressure. Therefore, pay attention to safety and usage recommendations (BP - Brust Pressure)

It is important that the pressed terminals are identified to enable tracking. In addition, it is recommended to use hoses within the working pressure (WP - Working Pressure), with crystal (if the job allows the insertion of protection) and stocking and / or safety loop.

The terminals, on the other hand, must be compatible with the hoses and nozzles and tested when mounted on them.

It is important that the certifications of the hoses are up to date, as there are requirements that request them for the provision of hydrojetting services, in addition to ensuring the safety of the operation.

All hoses are usually given serial and batch numbers engraved near one of the terminals. This information must be included in the hose certificate for item traceability.

Waterjet accessory features

Undoubtedly, the high pressure hose has its particularities.

To start, the hose has an internal tube, which has the function of conducting the fluid.

It is important to know that the greater the number of hoses, the heavier they become and the smaller the permitted radius of curvature. This, to prevent the wefts from deforming and creating a fragility at the crease point, subject to breakage.

Another important characteristic is that the hoses must also be dimensioned according to the flow rate of the Pump or Accessory. Because, when improperly dimensioned, it can compromise the working pressure due to a characteristic known as pressure drop.

Therefore, it is recommended that the pressure drop along the hose path does not exceed 15% of the operating pressure of the waterjet pump. Therefore, it is common to consider that the maximum speed of water in the hose does not exceed 2,5 meters per second.

In addition, the hoses have steel wefts, which help to give the necessary resistance to internal pressure efforts.

Finally, the product can also be mounted with an external coating to further protect against any irregularities.

It is also worth mentioning that the accessory is sought after by different sectors that bet on hydrojetting solutions, such as: chemical, petrochemical, sugar-alcohol, automobile, oil platforms, civil construction companies and many other segments.

high pressure hose

Essential care with high pressure hoseo

In fact, the high pressure hose is a strong and effective accessory. But, to maintain its durability, it is necessary to invest in some basic care, such as:

  • Be careful when handling the hose, as it is essential not to twist or pull to avoid breakage.
  • Prevent the hose from being dragged on the floor, as this can damage the material due to uneven floors and objects that can cause premature wear or even puncture it.
  • Work respecting the nominal working pressure, according to the instructions for use in the manufacturer's manual;
  • Store the item in a covered and ventilated place to preserve its good conditions of use.

In addition, it is essential that all assembled hoses are inspected before use. Thus, it is possible to identify the existence of damage, wear or imperfections that can impair the task.

Therefore, the verification, which needs to be carried out periodically during the operation, must analyze factors such as: diameter, length and working pressure, state of outer shell, condition of the terminals and compatibility with the pump pressure, in addition to the validity of the test certificate .

Hose life

Another frequently asked question is about the service life of the hoses. In general, there is no limit on hours of operation, nor is there a minimum of hours.

Therefore, the life of the hose is directly dependent on the operating conditions and user care.

Quality and safety solutions

As we mentioned throughout this text, the high pressure hose is a very important item for hydrojetting services.

But, now that you already know the functionalities and characteristics of this item, we want to talk about LEMASA's solutions for hydrojetting, which are recognized in the market for being synonymous with quality and safety.

It is known that LEMASA has a dedicated cell for assembling and maintaining equipped hoses. This cell is certified by the main world manufacturers of inputs for the manufacture of super high (up to 1.400 bar) and ultra high pressure (up to 6.900 bar) hose. Even equipped with the same machines found in factories in Europe and the United States.

In addition, all of our hoses, which are available for up to 2.800 bar (40.000 psi), are pressed, tested and certified by bid.

Our items can be applied in segments such as:

  • Petrochemical industry;
  • Civil construction branch;
  • Sugar and alcohol industry;
  • Mining industry;
  • Oil platforms.


So, if you want to know more details about our hoses, please click here and check it out!

On our website we have technical information about the different models available. See it right now!

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