Pressure and Vacuum Behavior of Hoses
Hoses are used in many applications, whether for transporting raw materials, gases, or liquids. It is important that the hoses used can withstand physical conditions such as vacuum and pressure. A proper understanding of the pressure and vacuum behavior of the hoses used is essential to ensure they support the efficiency, safety, and reliability of the application. Specially adapted hoses that meet individual requirements are necessary.
In this article, we would like to provide you with all the important information regarding the pressure and vacuum behavior of hoses so that you can select the right hose system for your needs.
Contents
- Vacuum & Pressure - An Explanation
- Special Hoses for Pressure Applications
- High-Quality Hoses for Pressure Applications
- The Difference between Burst Pressure and Operating Pressure
- Variations in Operating Pressure
Vacuum & Pressure - An Explanation
To better understand how hoses behave under pressure and vacuum, it is important to define the terms “pressure” and “vacuum” more precisely. Pressure refers to the force exerted on a surface per unit area. It is typically measured in pascals (Pa), psi, or bar. Pressure acts as a driving force inside hoses. It is necessary to move liquids and gases through the hose. This pressure can be generated from the outside using pumps or compressors. A vacuum refers to the condition that arises when the pressure inside a space is lower than the ambient pressure. In hoses, a vacuum is used to draw in materials. A vacuum is also used in systems that are sensitive to air contamination.
Pressure and vacuum are important factors that must be considered in the design and manufacture of hoses. The effects of these factors can also vary depending on the application. Under high pressure, hoses must be robust enough to prevent leaks or damage. They must also be flexible enough to withstand vibrations or bending without rupturing. When it comes to vacuum conditions, a key factor is that the material is specially reinforced to protect the hose from collapsing. Therefore, the materials and wall thickness of each.
Special Hoses for Pressure Applications
Hoses designed for pressure applications typically feature a fabric reinforcement that serves as a pressure-bearing layer. In contrast, hose types with plastic or steel spirals are primarily designed as vacuum hoses. Regardless of the design, all hoses may experience changes in length and diameter and exhibit a tendency to kink under the specified pressure and vacuum conditions. Our hoses are suitable for various applications. To help you determine which hose is right for your application, you will find detailed information on each product in the respective product description. This allows you to immediately see the maximum permissible operating pressure as well as the negative pressure or vacuum the hose must withstand. Depending on the intended application, the different tolerance ranges must then be taken into account. It is crucial to consider these parameters when selecting a hose. We strongly recommend determining the hose’s behavior through preliminary testing under real-world operating conditions to ensure optimal results during installation.
High-Quality Hoses for Pressure Applications
As experts in hose technology, we offer a wide range of hoses for various vacuum and pressure applications. Our hose solutions are specifically designed to meet the demanding requirements of various industries and applications. This is because our products are manufactured exclusively from the highest-quality raw materials to ensure high reliability and durability. Do you have any questions? We are happy to assist you at any time with personalized advice and help you choose the right hose.
Difference between Burst Pressure and Operating Pressure
It is important to distinguish between burst pressure and operating pressure. Operating pressure, also known as nominal pressure, describes the pressure the hose can withstand under normal use and at which it is safe to use. Burst pressure, on the other hand, is the maximum pressure and serves as a safety value. If the burst pressure is reached or exceeded, this can cause the hose to tear or burst. Especially in emergencies or applications where a sudden pressure increase is possible, it is important to know the burst pressure as well. The burst pressure is usually a multiple of the working pressure and thus provides a sufficient safety margin to allow for intervention before the hose bursts.
Variations in Operating Pressure
External factors can cause the operating pressure to change. Heat and weather conditions, in particular, can affect the operating pressure. Unless otherwise specified, operating pressure specifications generally refer to use at room temperature.