The One-Way Ventilation Explosion-Proof Valve (Model PD04A2K-50) is a high-performance industrial safety component engineered to ensure secure, unidirectional pressure release in hazardous environments. As a professional Explosion-Proof Ventilation Valve specifically developed for environments containing flammable gases, hazardous vapors, toxic fumes, or dust particles, it prevents backflow contamination while maintaining safe internal pressure levels.
This advanced One-Way Explosion-Proof Valve is widely used in chemical plants, energy storage systems, lithium battery packs, oil & gas infrastructures, explosion-proof electrical cabinets, and other high-risk industrial applications that require reliable pressure relief and environmental sealing.
Built with a rugged aluminum alloy structure, optional configurations such as Metal Explosion-Proof Valve, Plastic Explosion-Proof Valve, PTFE Explosion-Proof Ventilation Valve, High-Temperature Explosion-Proof Valve, and Corrosion-Resistant Explosion-Proof Valve can be customized for special engineering needs. As a trusted Explosion-Proof Valve Manufacturer and Explosion-Proof Vent Valve Supplier, we also offer Custom Explosion-Proof Ventilation Valve solutions and Wholesale Explosion-Proof Valves for OEM and industrial integration projects.

| Product model | PD04A2K-50 |
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| Product type | Waterproof, breathable and explosion-proof valves | Body Material | Aluminum alloy |
| Valve installation type | Unidirectional explosion-proof valve (without waterproof and breathable membrane) | Ingress protection | IP68/6K9K |
| Air permeability ML/min@1.5kPa | / | kPa Turning pressure kPa | 3~5 |
| Air permeability ML/min@2.5kPa | / | Installation: | 2-hole external mounting |
| Fully open exhaust area of the spool (mm²) | 620 |
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Product Description & Application Value
The PD04A2K-50 is a unidirectional Industrial Explosion-Proof Valve with superior sealing capability and a controlled activation pressure of 3–5 kPa. Once internal pressure reaches the threshold, the valve opens automatically, releasing gas outward while blocking the entry of external contaminants, including explosive gases, dust, and moisture.
With IP68/6K9K ingress protection, this Waterproof Explosion-Proof Valve and Dustproof Explosion-Proof Vent Valve ensures dependable performance even in submerged, dusty, or high-pressure cleaning environments. It is ideal for mission-critical systems where safety, durability, and unidirectional airflow are essential.
Key Features & Functional Advantages
1. Unidirectional Explosion-Proof Architecture
The valve supports controlled one-way exhaust, preventing backflow and safeguarding internal equipment. This makes it an essential Ventilation Explosion-Proof Valve for explosive atmospheres and sealed enclosures.
2. IP68/6K9K Protection – Waterproof + Dustproof + Anti-Impact
Engineered for extreme conditions, the valve resists high-pressure water jets, dust intrusion, mud, humidity, and chemical exposure. Ideal for outdoor or harsh industrial environments.
3. Durable Aluminum Alloy Construction
The PD04A2K-50 is built from corrosion-resistant, high-strength aluminum alloy. Optional variations include Metal Explosion-Proof Valve, Plastic Explosion-Proof Valve, and PTFE Explosion-Proof Ventilation Valve based on application needs.
4. High Venting Capacity – 620 mm² Exhaust Area
The fully open exhaust path supports rapid pressure release, making it suitable for sealed battery modules, energy storage cabinets, and explosion-proof electrical housings.
5. Automatic Opening at 3–5 kPa
Precise turning pressure ensures timely protection without accidental triggering, maintaining system stability and structural integrity.
6. Easy External Installation
A simple 2-hole external mounting system ensures fast integration into various industrial devices, reducing installation time and engineering costs.
Application Scenarios
The PD04A2K-50 is ideal for environments requiring safety venting, waterproofing, and explosion protection:
Chemical processing facilities – relief of flammable vapors
Lithium battery packs & BESS cabinets – explosion-pressure mitigation
Oil & gas refineries – hazardous gas exhaust
Explosion-proof electrical enclosures – internal overpressure control
Hazardous goods storage containers – emergency venting
Outdoor power systems and industrial cabinets – IP68 safety sealing
Energy storage and EV battery systems – flame arrest and pressure balance
Wherever flammable vapors or dust exist, this Industrial Explosion-Proof Valve provides reliable, long-term safety.
High-performance One-Way Ventilation Explosion-Proof Valve
IP68/6K9K rating for extreme waterproof and dustproof protection
Large 620 mm² exhaust area for fast emergency venting
Intelligent 3–5 kPa activation pressure
Rugged aluminum alloy structure with corrosion resistance
Supports OEM customization for pressure, materials, and airflow
Professional Explosion-Proof Valve Manufacturer with large-scale Wholesale Explosion-Proof Valves supply capability
FAQ – One-Way Ventilation Explosion-Proof Valve (PD04A2K-50)
1. What is a One-Way Ventilation Explosion-Proof Valve?
It is a unidirectional safety valve that releases internal pressure but prevents external contaminants, gases, or dust from entering hazardous or sealed equipment.
2. Which industries use this valve?
Chemical plants, oil & gas, BESS, EV batteries, power systems, hazardous materials storage, and explosion-proof equipment manufacturers.
3. What is the protection level?
IP68/6K9K—fully waterproof, dustproof, and resistant to high-pressure cleaning.
4. When does the valve activate?
It opens automatically at 3–5 kPa, ensuring timely pressure relief.
5. Does it require a membrane?
No. This model is a membrane-free One-Way Explosion-Proof Valve with structural sealing.
6. How is it installed?
Through a simple 2-hole external mounting system.
7. Can it be customized?
Yes—airflow, pressure levels, materials (metal, plastic, PTFE), and temperature resistance can all be tailored to project requirements.