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2026/09/01Clicks：5
For high-voltage equipment used in new energy and defense-related applications, a water hose is not simply a component for fluid transfer. When the system operates around 50 kV, the hose also needs to be considered from the perspective of insulation, long-term durability, and leak prevention.
In this project, the customer operates in the new energy and defense sectors. The hose is installed on a 50 kV high-voltage platform and is used to transfer room-temperature pure water at a working pressure of approximately 5 bar. Electrical insulation is an important requirement.
The customer had previously used a Continental VariFlex hose, but experienced a relatively short service life, material aging, and water leakage during operation. Based on the application conditions, CJan Fluid Technology Co., Ltd. recommended the EMP Multi-Purpose Hose as an alternative solution for evaluation.
The application is part of a high-voltage platform used in new energy and defense-related equipment.
The main operating conditions are:
| Item | Requirement |
|---|---|
| Industry | New Energy / Defense |
| Equipment | 50 kV High-Voltage Platform |
| Medium | Room-Temperature Pure Water |
| Working Pressure | Approx. 5 bar |
| Key Requirement | Electrical Insulation |
| Previous Hose | Continental VariFlex |
| Existing Issues | Aging, Short Service Life, Water Leakage |
| Recommended Product | EMP Multi-Purpose Hose |
Although the working pressure is only around 5 bar, the 50 kV electrical environment makes hose selection more demanding than a conventional water-transfer application.
The customer had been using Continental VariFlex hose for the water circuit.
During actual operation, two issues became increasingly noticeable.
The hose showed signs of aging after a period of operation, affecting the expected service cycle.
For equipment that may require continuous operation, frequent hose replacement can increase maintenance work and downtime.
As the hose aged, leakage became another concern.
For a conventional water system, leakage is mainly a maintenance issue. On a 50 kV high-voltage platform, however, water leakage requires much more attention because the water circuit operates close to high-voltage equipment.
This made the customer look for a replacement solution with better overall durability and reliability.
Based on the application requirements, the recommended product is:
EMP is a multi-purpose industrial hose designed for a range of fluid transfer applications.
For this project, the selection was based on the customer's actual operating conditions, including:
The goal was not simply to replace one hose brand with another, but to find a more suitable solution for the customer's actual operating environment.
This is one of the most important aspects of this application.
For a standard pure-water system, hose selection normally focuses on:
Pressure + Temperature + Chemical Compatibility + Flexibility
For a 50 kV platform, electrical considerations also become important.
The hose and the complete piping arrangement need to be evaluated according to the equipment's electrical design and insulation requirements.
Potential concerns include:
It is important to note that a hose should not be considered electrically suitable simply because it is made from rubber or another non-metallic material. Actual insulation requirements should be verified according to the specific hose construction and system design.
The project uses room-temperature pure water as the medium.
EMP can be evaluated for water-transfer applications according to the required specification and installation conditions.
In this project, the main challenge is not the water itself, but achieving stable long-term operation in a high-voltage equipment environment.
High-voltage equipment and new energy systems often have limited installation space.
Flexible hoses can make routing easier around equipment, connectors, and other components.
Proper hose routing can also help avoid excessive bending, pulling, and mechanical stress.
Since the customer's previous hose experienced aging and leakage, service life became an important part of the replacement evaluation.
When selecting a replacement hose, it is useful to consider not only the initial pressure and temperature requirements, but also:
A working pressure of approximately 5 bar may appear relatively moderate.
However, pressure is only one part of the selection process.
For a 50 kV platform, the hose should be evaluated based on several factors.
The hose working pressure should meet the system requirement with an appropriate safety margin.
The hose and complete water circuit should be checked against the equipment's insulation requirements.
Long-term exposure to water, temperature changes, bending, and mechanical stress can affect hose performance.
Aged or damaged hoses can develop leakage, making regular inspection important.
The hose should be installed without excessive bending, stretching, twisting, or external abrasion.
Hose leakage is not always caused by the hose material alone. Installation conditions can also have a significant impact.
The hose should be routed within its recommended minimum bending radius.
Continuous contact with sharp metal edges or moving equipment can damage the outer cover.
The hose should have sufficient length and should not remain under constant tensile stress.
For critical equipment, the hose should be checked periodically for:
Early replacement can help prevent unexpected leakage.
The customer's previous application used Continental VariFlex hose, with aging and leakage becoming the main concerns.
For the new evaluation, EMP was recommended based on the actual operating conditions:
50 kV high-voltage platform + room-temperature pure water + approx. 5 bar pressure + insulation requirement
The replacement evaluation therefore focused on more than dimensional compatibility.
The key considerations were:
Fluid compatibility + pressure + flexibility + insulation requirements + service life + leakage prevention
This approach is particularly useful when replacing an existing imported hose in high-end equipment.
This project involves a new energy and defense-related high-voltage platform operating at approximately 50 kV.
The hose is used to transfer room-temperature pure water at approximately 5 bar, with electrical insulation being an important requirement.
The customer previously used Continental VariFlex hose, but encountered:
Short service life + aging + water leakage
Based on the application requirements, the recommended product is:
The EMP hose can be evaluated as an alternative solution for this type of water-transfer application, with the final selection depending on the required hose size, pressure, insulation specifications, connection method, and installation environment.
For high-voltage equipment, choosing the right hose means looking beyond pressure and temperature. Insulation, durability, installation conditions, and leakage prevention all need to be considered together.
CJan Fluid Technology Co., Ltd. provides industrial hose and fluid connection solutions for new energy, defense-related equipment, semiconductor, chemical, pharmaceutical, food, and other industries.
Our product range includes:
For project applications, CJan can evaluate hose selection according to medium, pressure, temperature, hose size, bending radius, insulation requirements, connection method, and installation environment.
Q: What hose is suitable for a 50 kV high-voltage platform?
A: A hose for a 50 kV platform should be selected according to the fluid, pressure, temperature, electrical insulation requirements, installation environment, and required service life.
Q: Why is hose insulation important for high-voltage equipment?
A: Hose insulation is important because the water circuit may be installed near high-voltage components, making electrical insulation and leakage prevention important parts of the overall system design.
Q: Can EMP hose replace Continental VariFlex hose?
A: EMP Multi-Purpose Hose can be evaluated as an alternative to VariFlex for suitable applications, provided that the hose size, pressure, medium, insulation requirements, and installation conditions are properly matched.
Q: What causes water hose aging and leakage?
A: Water hose aging and leakage can be related to material aging, repeated bending, external abrasion, excessive tension, temperature exposure, connection conditions, or long-term service.
Q: How should a hose be selected for high-voltage equipment?
A: Hose selection for high-voltage equipment should consider pressure, temperature, medium, electrical insulation, service life, flexibility, bending radius, connection method, and installation environment.
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