One-Way Waterproof Explosion-Proof Valve

The One-Way Waterproof Explosion-Proof Valve, model PD08ALM12*1.5-7, is a precision-engineered component that combines one-way gas flow, IP68 waterproof sealing, and explosion protection into a single, compact design. This explosion-proof check valve is specially developed to meet the demanding needs of outdoor electrical enclosures, marine equipment, and hazardous industrial environments, where moisture resistance and flammable gas protection are essential.

Technical Specifications

Key Features and Benefits

One-Way Air Permeability Design

This valve is built to allow air or gas to escape in a single direction, ensuring safe pressure release while blocking reverse airflow. This one-way function is crucial in sealed systems like outdoor electrical control boxes or chemical storage cabinets, where internal pressure may build due to temperature variations or gas generation.

Explosion-Proof Structure

Constructed with high-strength aluminum alloy, this explosion-proof one-way valve prevents any ignition source from escaping the enclosure, effectively mitigating explosion hazards in flammable environments. It complies with UL94-V0 flame retardancy standards, making it ideal for hazardous area equipment in the oil & gas, mining, or chemical sectors.

Waterproof and Dustproof – IP68 / 6K9K Rated

With a robust IP68 / 6K9K protection rating, the valve is completely sealed against water and dust, allowing it to operate reliably in harsh weather conditions, marine environments, and wet industrial zones. Whether exposed to heavy rain, splashing, or dust, this waterproof one-way valve maintains dependable performance.

Temperature & Environmental Tolerance

Designed to withstand extreme temperatures, it operates reliably within a working temperature range of -40℃ to +120℃, making it suitable for outdoor deployments, freezing climates, or high-heat industrial applications.

This explosion-proof waterproof valve is widely used in industries that require both safety and environmental sealing. Its common application areas include:

• Outdoor Electrical Control Boxes

• Sealed Junction Boxes in Hazardous Locations

• Marine Electrical Systems

• Flammable Gas Detector Housings

• Industrial Automation Cabinets

• Battery Storage Enclosures

• LED Street Light Enclosures

By preventing water ingress and enabling safe gas ventilation, the one-way breather valve helps extend the service life of sensitive components and reduces the risk of corrosion, pressure build-up, or explosion.

Why Choose Our One-Way Waterproof Explosion-Proof Valve?

• High Durability: Built with corrosion-resistant aluminum alloy for long-term outdoor and industrial use.

• Enhanced Safety: Certified flame retardant and explosion-proof construction for peace of mind.

• Installation Flexibility: Threaded mounting makes it easy to install into existing box enclosures.

• Extreme Protection: From dust storms to high-pressure water jets, this valve endures it all.

• Industry Versatility: Ideal for use across the petrochemical, power distribution, marine, and telecommunications sectors.

One-Way Waterproof Explosion-Proof Valve – FAQ

1. What is the main function of this valve?

The valve is designed to allow one-way gas or air release, while preventing water, dust, or flammable substances from entering sealed enclosures. It combines explosion protection, IP68 waterproofing, and pressure regulation, making it ideal for sealed outdoor and industrial systems.

2. What types of environments is this valve suitable for?

This valve is built for harsh and hazardous environments, such as:

• Marine environments (salt, humidity)

• Outdoor electrical enclosures

• Hazardous areas (oil & gas, chemical plants, mining)

• High/low temperature zones (-40℃ to +120℃)

3. What is the protection rating of the valve?

It features a high-level IP68 / 6K9K protection rating, which ensures resistance to dust, heavy water spray, and temporary submersion, offering reliable performance in extreme weather or industrial conditions.

4. Is the valve flame-retardant?

Yes, it meets the UL94-V0 flame retardant standard, providing additional safety by resisting flame propagation in explosive environments.

5. Does this model include a waterproof breathable membrane?

The PD08ALM12*1.5-7 model does not include a waterproof breathable membrane. However, versions with membranes can be customized or selected if enhanced air permeability and pressure equalization are required.

6. What is the valve’s opening pressure?

The opening pressure ranges from 7 to 11 kPa, allowing internal air or gas to be vented when pressure exceeds this range, thereby protecting enclosures from deformation or failure.

7. How is the valve installed?

It uses a threaded mounting design, with a standard thread length of 6 mm. The recommended mounting torque is 8–12 kgf·cm, enabling quick and secure installation on metal or plastic enclosures.

8. What types of equipment can this valve be used on?

Common applications include:

• Outdoor control boxes

• Waterproof LED light housings

• Communication cabinets

• Battery compartments

• Hazardous-area sealed enclosures