Explosion-Proof Valve-Unidirectional

With the accelerated development of new energy vehicles (NEVs), safety and pressure regulation within battery systems have become critical. In response to the safety challenges of non-vacuum sealed battery pack cavities, PUW has specially designed the PD04A2K-42Y Explosion-Proof Valve – Unidirectional. This precision-engineered valve offers controlled pressure relief, ensuring reliable protection from overpressure events caused by gas generation or thermal runaway.

The PD04A2K-42Y is a compact, unidirectional Explosion-Proof Valve built for environments where moisture, dust, and gas expansion must be carefully controlled. Designed without a waterproof and breathable membrane, this valve prioritizes fast directional venting and robust protection in confined battery enclosures.

Key Features

• Unidirectional Explosion Venting: Allows gases to escape in a single, defined direction, preventing backflow and maintaining battery enclosure integrity.

• Fast Pressure Relief: Equipped with a large 400 mm² fully open exhaust area to rapidly release gas during overpressure.

• Precise Burst Pressure: Initiation pressure is tightly controlled between 3–5 kPa, ensuring reliable activation without premature venting.

• Dual-Channel Pressure Design: Promotes high-efficiency gas evacuation through separate pathways.

• High Protection Rating: Rated IP68 / IP6K9K, ensuring resistance to water immersion, dust ingress, and high-pressure spray.

• Durable Housing: Constructed from lightweight aluminum alloy, providing excellent strength-to-weight performance and corrosion resistance.

• Compact Mounting Interface: Features a 2-hole external mounting design for easy integration into tight battery pack assemblies.

Application Scenarios

The PD04A2K-42Y Explosion-Proof Valve – Unidirectional is ideal for various new energy applications that require safe and efficient pressure regulation, including:

• Electric Vehicle Battery Packs (EV & PHEV)

• Energy Storage Systems (ESS)

• Onboard Battery Modules for Commercial Vehicles

• Power Battery Housing Enclosures

• Smart Battery Safety Vents

• Industrial and Automotive Electronics

Advantages of PUW Unidirectional Explosion-Proof Valves

• Designed for non-vacuum battery environments

• Highly repeatable triggering performance

• Directional venting avoids contamination of surrounding components

• Tool-free integration with simplified mounting

• Full support for OEM/ODM customization

Customization & Support

PUW supports tailored solutions based on customer requirements, including:

• Custom burst pressure calibration

• Optional anti-flame or spark-resistant coatings

• Valve housing material upgrades

• Labeling and batch traceability for EV compliance

FAQ – Frequently Asked Questions

Q1: What is the purpose of the PD04A2K-42Y unidirectional explosion-proof valve?

A1: This valve provides rapid, one-way gas relief in sealed battery systems, protecting against thermal runaway and pressure buildup.

Q2: What type of battery system is this valve suitable for?

A2: It is ideal for non-vacuum sealed battery packs used in EVs, hybrid vehicles, and energy storage systems (ESS).

Q3: What is the valve’s turning (activation) pressure?

A3: The activation pressure is precisely controlled between 3–5 kPa, ensuring timely and reliable pressure release.

Q4: Does the valve include a breathable membrane?

A4: No. This model does not include a waterproof/breathable membrane, focusing on fast directional pressure relief.

Q5: What is the protection rating of this valve?

A5: Rated IP68/IP6K9K, it offers excellent dust, water, and high-pressure spray resistance.

Q6: What materials is the valve made of?

A6: The valve is made from aluminum alloy, chosen for its lightweight and corrosion-resistant properties.

Q7: How is the valve installed?

A7: Using a 2-hole external mounting, it can be easily fixed to battery enclosures or protective housings.

Q8: Can I request a different pressure range or mounting method?

A8: Yes. PUW offers OEM/ODM customization, including custom burst pressure, mounting interfaces, and material options.