The Explosion-Proof Breather Valve With Signal Wiring, model PBA4K-50E, is an advanced industrial-grade safety device specifically designed to provide controlled venting, explosion protection, and real-time signal monitoring in harsh or hazardous environments. Whether applied to chemical storage tanks, electronic enclosures, or battery systems in explosion-prone areas, this valve delivers high air permeability, precision pressure control, and safe electrical feedback, making it a preferred solution for smart industrial safety systems.
As a member of our Explosion-Proof Breather Valves series, this unit meets modern demands for pressure equalization, anti-explosion structure, and status signal output, all within a compact and reliable footprint.

Product model | PBA4K-50E |
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Product type | Waterproof, breathable and Explosion-Proof Valves | Body Material | Aluminum alloy |
Valve installation type | Early warning type | Ingress protection | IP68/6K9K |
Air permeability ML/min@1.5kPa | ≥600 | kPa Turning pressure kPa | 7~13 |
Air permeability ML/min@2.5kPa | ≥1000 | Installation: | 4-hole built-in |
Fully open exhaust area of the spool (mm²) | 550 |
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Core Product Features
Explosion-Proof Safety Design
This Explosion-Proof Breather Valve is constructed from high-strength aluminum alloy, offering not only structural durability but also corrosion resistance. The valve body is engineered to prevent ignition of surrounding flammable gases or vapors, conforming to explosion-proof application requirements, especially in ATEX and IECEx certified areas.
Integrated Signal Wiring for Remote Monitoring
Unlike traditional passive breather valves, this model includes electrical signal output wiring, enabling real-time status transmission to monitoring systems. This transforms it into a smart Explosion-Proof Valve With Sensor—suitable for integration with SCADA systems, alarm panels, and remote PLCs. When the valve reaches a pressure change, the electrical signal breather valve setup transmits a warning or status change signal to the operator, enhancing intrinsically safe monitoring capabilities.
Superior Ventilation Performance
Air permeability of ≥600 ML/min at 1.5 kPa and ≥1000 ML/min at 2.5 kPa ensures that internal enclosures remain within safe pressure ranges.
Supports both pressure relief and vacuum break functions to avoid tank deformation or seal failure.
Large fully open exhaust area of 550 mm² enables rapid venting when pressure exceeds safe limits.
Turning pressure range between 7–13 kPa provides stable and responsive operation for various applications.
Rugged Ingress Protection – IP68/6K9K Rated
The PBA4K-50E is IP68/6K9K certified, ensuring total protection against water, dust, high-pressure jets, and temporary immersion. This makes it an ideal choice for explosion-proof enclosures, battery compartments, or outdoor installations in extreme environments.
Compact Built-In Design
Installation method: 4-hole built-in mounting
Designed for flexible integration into equipment panels, vehicle battery boxes, storage tanks, or electrical cabinets.
Offers space-saving implementation without compromising functionality.
Application Fields
This Explosion Proof Breather Vent is ideal for a wide variety of industrial, petrochemical, and electrical applications:
Fuel and chemical storage tanks – Pressure balancing and explosion prevention
Battery enclosures – Prevents thermal expansion and overpressure during charging
Power distribution cabinets – Venting of gas buildup in explosion-prone zones
Automotive and EV battery packs – Smart pressure control with feedback signal
Industrial enclosures in hazardous areas (Zone 1/Zone 2) – Ensures environmental and explosion protection
Offshore equipment – IP68-rated waterproofing ensures marine safety
By integrating both a ventilation mechanism and signal-based monitoring, the PBA4K-50E goes beyond conventional safety valves, serving as a critical component in digitalized safety management systems.
Combines the functionality of a breather valve with a remote sensor system
Supports both pressure relief and intrinsically safe feedback
Durable construction with IP68/6K9K waterproof and dustproof certification
Explosion-Proof Breather Valve designed to meet rigorous safety standards
Ensures early warning through electrical signal output, reducing system failure risks
Suitable for hazardous environments and mission-critical applications
FAQ
Q1: What is an Explosion-Proof Breather Valve With Signal Wiring?
A1: It is a safety valve designed to release internal pressure or vacuum in a sealed enclosure while preventing ignition of flammable gases. With integrated signal wiring, it provides real-time status feedback to remote monitoring systems.
Q2: What are the main applications of this valve?
A2: It is used in fuel tanks, battery enclosures, chemical storage tanks, industrial control cabinets, and other equipment located in hazardous areas where explosion protection and monitoring are essential.
Q3: What certifications or protection ratings does the valve have?
A3: The PBA4K-50E valve is rated IP68/6K9K, offering excellent resistance to dust, high-pressure water, and immersion. It is also explosion-proof and suitable for intrinsically safe systems in hazardous areas.
Q4: How does the signal wiring function work?
A4: The integrated signal wiring detects valve status (e.g., open/closed or pressure threshold reached) and transmits it to a remote controller, PLC, or monitoring system. It acts as an early warning mechanism for pressure anomalies.
Q5: What is the airflow performance of this breather valve?
A5:
Q6: Can the valve be customized for different installations or signal types?
A6: Yes, the breather valve can be customized in terms of installation methods, signal interface types, and body materials to suit specific applications. OEM/ODM requests are welcome.