The Breathable Explosion-Proof Valve is a specialized safety device designed to provide ventilation, pressure equalization, and explosion protection in one compact unit. This waterproof and breathable Explosion-Proof Valve allows controlled air and gas exchange while preventing the accumulation of hazardous gases inside sensitive enclosures such as battery packs, chemical containers, or industrial equipment housings.
Built with a durable aluminum alloy body and featuring an IP68/6K9K protection rating, this explosion-proof vent valve delivers superior environmental resistance, making it suitable for demanding outdoor and industrial environments.


Model | PB10A4K-70D-8T |
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Product type | Waterproof, breathable Explosion-Proof Valve | Body material | Aluminum alloy |
Valve mounting type | Internal flange type | Protection class | IP68/6K9K |
permeability ML/min@1.5kPa | ≥1000 | Opening pressure kPa | 7~13 |
permeability ML/min@2.5kPa | ≥2000 | Installation type | 4-hole internal mounting |
Spool fully open exhaust area (mm²) | 1620 |
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Explosion-Proof Design
The valve’s explosion-resistant structure effectively prevents internal overpressure from igniting volatile gases, ensuring maximum safety in hazardous locations.
High Breathability with Controlled Ventilation
Designed for continuous pressure equalization, this breathable vent valve allows air and gas exchange while minimizing moisture and dust ingress, thanks to its high permeability rate (≥1000 ML/min @1.5kPa and ≥2000 ML/min @2.5kPa).
Waterproof and Dustproof (IP68/6K9K Rated)
The IP68/6K9K protection class makes this waterproof explosion-proof valve ideal for outdoor or harsh industrial conditions, protecting sensitive components from water, dust, and environmental contaminants.
Aluminum Alloy Body for Durability
The aluminum alloy housing offers excellent corrosion resistance, lightweight performance, and long-term durability even under extreme working conditions.
Precise Opening Pressure Range
The opening pressure is finely tuned between 7~13 kPa, ensuring reliable venting when internal pressure exceeds safe limits.
Large Exhaust Area for Rapid Pressure Relief
Featuring a fully open exhaust area of 1620 mm², the explosion-proof air release valve enables quick and efficient gas evacuation, reducing the risk of overpressure-related failures.
Internal Flange Type with 4-Hole Mounting
This internal mounting explosion-proof valve offers secure and easy installation with a 4-hole flange design, making it suitable for a wide range of equipment.
Application Areas
This breathable explosion-proof valve is widely used in industries that require both ventilation and explosion protection, including:
Lithium Battery Packs (EV Battery Enclosures, Energy Storage Systems)
Chemical Storage Containers
Food Processing Equipment
Pharmaceutical Manufacturing Equipment
Industrial Electrical Enclosures
Outdoor Communication Cabinets
Fuel Tank Venting
Telecom Base Station Housings
Laboratory Safety Enclosures
Benefits of Using the Breathable Explosion-Proof Valve
Improved Safety: Reduces the risk of explosion by safely venting built-up gases.
Enhanced Equipment Longevity: Prevents moisture and dust ingress, protecting sensitive components.
Reliable Pressure Relief: Opens within a precise pressure range to avoid structural damage.
Versatile Application: Suitable for both stationary and mobile equipment operating in harsh environments.
Compliance with Industrial Safety Standards: Designed for use in hazardous locations requiring explosion protection.
Frequently Asked Questions (FAQ)
Q1: What is a Breathable Explosion-Proof Valve?
A: It’s a safety device that combines ventilation, pressure equalization, and explosion prevention. It allows air and gas exchange while blocking external contaminants and preventing ignition risks.
Q2: Where is this explosion-proof vent valve commonly used?
A: Widely used in battery packs, chemical containers, industrial control cabinets, telecommunication enclosures, and hazardous gas environments.
Q3: Can this valve withstand outdoor conditions?
A: Yes, with its IP68/6K9K rating, the valve is fully waterproof, dustproof, and resistant to high-pressure water jets, making it ideal for outdoor industrial installations.
Q4: How does the breathability feature help?
A: The breathable function helps equalize internal and external pressure, preventing equipment deformation while keeping out water, dust, and other contaminants.
Q5: What is the opening pressure range for this valve?
A: The valve opens when internal pressure reaches between 7 to 13 kPa, providing timely and reliable venting.
Q6: Can the valve handle both gases and vapors?
A: Yes, it is suitable for venting various gases or vapors, preventing gas build-up that could lead to explosion risks.