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Key points of this article
- Proper hose selection: Choosing a hose that is suitable for the application fluid, temperature, and pressure can reduce deterioration and decrease the frequency of replacements.
- Confirming required features: Selecting a hose and couplings with the necessary features for the intended application, including static electricity prevention or resistance to staining, is essential.
- Prioritizing specifications beyond what’s needed: Selecting a hose with performance specifications that exceed the requirements of the intended application will help extend the lifespan of the hose and reduce maintenance costs.
Checking the purpose, application, and operating conditions
The most important factor in reducing the frequency of hose replacement is selecting the best hose for the purpose, application, and operating conditions. There are many different types of hoses depending on the material and construction. Each type has its own characteristics, and using a less-than-ideal hose can result in premature deterioration, leading to more frequent replacements.
The following are some key points for selecting the best hose for the site.
Key point 1: Selecting the right hose material for the fluid being used
Choosing the right hose material for the fluid being used is a fundamental step. For example, when conveying chemicals, hoses made of non-PVC polyolefin resin or fluorine resin—which offer excellent chemical resistance—are best.
Key point 2: Selecting the right hose material for the operating temperature
For general applications, soft polyvinyl chloride (PVC) hoses typically have a heat resistance range of −5°C to 60°C. When operating at temperatures beyond this range, choosing hoses made from heat-resistant materials such as silicone or fluorine resin is essential.
Key point 3: Selecting the right hose for the operating pressure
There are two types of pressure: positive pressure (pressure feed) and negative pressure (vacuum). For negative pressure applications, the hose must be reinforced with metal or resin in a coil structure to prevent it from collapsing. Compared with braid-type hoses made with pressure-resistant reinforcement threads, coil-reinforced hoses offer superior shape retention and are more resistant to kinking and collapsing, making them better suited for applications in tight spaces or with a reduced bending radius, so long as the operating pressure limit is not exceeded.
For positive pressure applications, braided hoses made with pressure-resistant reinforcement threads are more suitable because they are less likely to stretch or swell under pressure, offering superior pressure resistance compared with coil-reinforced hoses.
Key point 4: Selecting the right hose for the required functionality
For this point, let’s consider a question from Hose Adviser Pro:
In addition to the above three factors—fluid, temperature, and pressure—what else is important to consider for selecting a hose to reduce costs?
Select from among A, B, and C below.
A. Selecting hoses and couplings with the necessary features and performance
B. Selecting hoses and couplings that are inexpensive to make replacement easier
C. Standardizing by using multifunction hoses and couplings for all products
The correct answer is A. Selecting hoses and couplings with the necessary features and performance.
Besides the fluid, operating pressure, and operating temperature, there are a variety of other required features to consider, including static electricity prevention, condensation prevention, and resistance to staining and odors. Selecting specialized hoses and couplings that meet any specific needs can help minimize costs.
Selecting the right hose to reduce costs
Verifying the fluid, operating temperature, and operating pressure, and selecting a hose suitable for these conditions makes it possible to extend the lifespan of the hose, prevent issues, and reduce costs. Selecting a hose with specifications (performance) slightly beyond the required range—so that the hose is not used at the edge of its operating limits—will also help ensure the hose will last longer and improve on-site safety.
Be sure to carefully review the manufacturer’s specification sheets and user manuals to select a hose that best suits the purpose, application, and operating conditions.
That wraps up our look at the key points for hose selection and use to reduce costs.
For any other inquiries or consultations, please contact the TOYOX Customer Service Office.
Hoses require regular replacement when needed. In factory settings, regular maintenance can help identify signs of deterioration such as damage, cracks, pinholes, and hardening. This will allow for prompt replacement to prevent potential problems. However, if hoses are deteriorating too quickly, the frequency of replacements will increase, raising overall maintenance costs.
In this article, Hose Adviser Pro will introduce key points for selecting and using hoses in a way that reduces replacement frequency and helps minimize costs.