PUW EPTFE Material Co., Ltd. It is a high-tech company integrating R&D, production, sales and service.
The company introduces international advanced technology and focuses on the development and application of expanded polytetrafluoroethylene (PTFE).
Model: PB10A4K-50P-8T
The Waterproof Vent Plug (Model: PBA4K-50P-8T) is a high-performance component engineered to provide efficient air ventilation while safeguarding sensitive devices and enclosures from moisture, dust, and debris. This advanced Waterproof, breathable, and Explosion-Proof valve is specifically designed for applications where internal pressure regulation and environmental protection are critical.
Whether installed in electrical enclosures, marine electronics, automotive systems, or industrial machinery, this vent plug ensures internal pressure balance without compromising ingress protection. Its IP68/6K9K rating guarantees outstanding resistance against water and dust, even under high-pressure cleaning or submersion.
| Product model | PBA4K-50P-8T | ||
| Product type | Waterproof, breathable and explosion-proof valves | Body Material | Aluminum alloy |
| Valve installation type | Built-in flange type (moisture barrier type) | Ingress protection | IP68/6K9K |
| Air permeability ML/min@1.5kPa | Air intake ≥ 9 the gas output ≥ 50 | Turning pressure kPa | 7~13 |
| Air permeability ML/min@2.5kPa | Air intake ≥ 15 | Installation: | 4-hole built-in |
| Fully open exhaust area of the spool (mm²) | 580 |
Certified with IP68 and 6K9K, this vent plug resists even the most demanding environmental conditions. It remains sealed during high-pressure water spray and submersion, making it ideal for outdoor and rugged use.
With exceptional gas exchange capacity, it prevents condensation and pressure buildup in sealed systems. The high air permeability at both 1.5kPa and 2.5kPa ensures efficient airflow regulation without compromising protection.
Built for safety-critical environments, this vent plug combines breathable venting with explosion-proof characteristics, offering security and peace of mind in volatile or high-temperature applications.
The precision-machined aluminum alloy body provides mechanical strength, corrosion resistance, and long-term reliability in marine, industrial, and outdoor settings.
1. Marine Navigation Systems
Marine environments are known for their high humidity, salt spray, and temperature fluctuations. Waterproof Vent Plugs provide essential pressure equalization while keeping seawater and moisture from damaging sensitive marine electronics. By integrating these vent plugs into marine navigation systems, such as GPS units and radar devices, it ensures long-term durability and consistent performance even during prolonged ocean exposure.
2. Outdoor Electrical Cabinets
Outdoor electrical enclosures are often exposed to rain, dust, and dramatic weather changes. The Waterproof Vent Plug allows air to circulate freely while maintaining an IP68/6K9K-rated seal against water ingress. This prevents condensation buildup inside the cabinet, protecting electrical components such as breakers, relays, and control boards from corrosion and short-circuit failures.
3. LED Street Lights
Modern LED street lights generate internal heat and are subject to wide temperature changes between day and night. The Waterproof Vent Plug helps equalize internal pressure, preventing stress on seals and reducing condensation inside the luminaire housing. It extends the lifespan of the LED driver and circuitry by maintaining a dry and balanced internal environment.
4. Solar Power Enclosures
Solar energy systems are often deployed in remote or exposed areas, where dust, rain, and extreme temperatures are common. Waterproof Vent Plugs provide the dual function of allowing heat and gases to escape while sealing out water and particulate contaminants. This improves the safety and efficiency of charge controllers, inverters, and monitoring devices housed in solar enclosures.
5. Battery Packs
In battery systems, especially lithium-ion battery packs, pressure changes due to charging/discharging cycles can lead to deformation or damage if not managed. Waterproof Vent Plugs release excess pressure while preventing water and dust entry. This protects battery cells from swelling or leakage and contributes to the safe operation of energy storage systems in EVs, drones, and backup power units.
6. Automotive Electronic Modules
Automotive ECUs, ADAS modules, and sensors are often located in challenging environments exposed to water splashes, road debris, and temperature variations. Incorporating Waterproof Vent Plugs into their enclosures ensures proper ventilation and pressure balance while maintaining a watertight seal, reducing the risk of module failure due to moisture or thermal expansion.
7. Sensor Housings
Precision sensors used in environmental monitoring, smart agriculture, and IoT applications must be protected from environmental elements without compromising sensitivity. Waterproof Vent Plugs allow trapped moisture or gas to escape from sensor enclosures while preventing water ingress, ensuring accurate data collection and extended sensor life.
8. Industrial Control Panels
Industrial control systems often operate continuously in high-demand applications. Waterproof Vent Plugs reduce internal pressure from component heating and environmental humidity, mitigating condensation risks and maintaining stable electrical performance. Their high air permeability and explosion-proof features also support safety in environments with potential gas buildup.
We offer OEM/ODM customization for different materials, installation types, and air permeability ranges. Our technical team provides support for product selection, design integration, and after-sales service to ensure your specific application requirements are fully met.
A Waterproof Vent Plug is a specialized component designed to provide pressure equalization and moisture protection. It allows air or gas to pass through while blocking water, dust, and contaminants, maintaining the integrity of sensitive electronic or mechanical systems.
Its primary function is to:
Prevent water ingress (rated IP68/6K9K).
Allow air intake and exhaust to avoid pressure build-up.
Prolong the lifespan of enclosed equipment by avoiding condensation and deformation.
The body is made of aluminum alloy, which provides durability, corrosion resistance, and lightweight strength, making it ideal for harsh outdoor or industrial environments.
It is suitable for:
Marine navigation systems
Outdoor electrical cabinets
LED street lighting
Solar power enclosures
Battery packs
Automotive electronic modules
Sensor housings
Industrial control panels
At 1.5kPa pressure:
Air intake ≥ 9 ML/min
Gas output ≥ 50 ML/min
At 2.5kPa pressure:
Air intake ≥ 15 ML/min
Gas output ≥ 600 ML/min
This ensures effective ventilation and pressure balance in dynamic environments.
IP68: Total protection against dust and long-term immersion in water.
6K9K: Resistant to high-pressure and high-temperature water jets from multiple directions.
This makes the vent plug suitable for both marine and automotive applications.
Telephone: 0769-22850556
Email: lvch@puw-eptfe.com
Address: No.20, Wanjiang Industrial Street, Wanjiang District, Dongguan City, Guangdong Province, China
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