EPTFE Explosion-Proof Valve

PUW is a professional manufacturer specializing in ePTFE-based venting and explosion-proof solutions. Our ePTFE Explosion-Proof Valve is engineered to provide fast pressure release, gas exchange, Waterproof protection, and explosion resistance — ensuring maximum safety in demanding environments such as EV battery packs, energy storage systems, power tools, and outdoor electronics.

Combining advanced ePTFE membrane technology and precision valve structure, PUW offers OEM/ODM services to meet diverse application scenarios.

What Is an ePTFE Explosion-Proof Valve?

The ePTFE Explosion-Proof Valve integrates a microporous ePTFE membrane with a structured housing (plastic, aluminum, or stainless steel). It allows continuous ventilation under normal conditions, but when internal pressure spikes — such as during thermal runaway in lithium batteries — the valve ruptures or opens instantly to safely release pressure, preventing device explosion or structural failure.

Key Features

• Fast Explosion Relief
  Instant response to internal overpressure (burst pressure customizable).

• Breathable but Waterproof
  Microporous ePTFE allows gas exchange while blocking water, dust, and oil.

• High Safety Standards
  Supports IP67/IP68, UN38.3, and battery safety certifications.

• Customizable Design
  Shapes, sizes, threads, and pressure points can be tailored for your project.

• Long-Term Durability
  Resistant to chemicals, corrosion, UV, and high temperature (up to 200°C).

Application Scenarios

• EV Battery Packs
  Pressure relief for prismatic, cylindrical, and pouch battery modules.

• Energy Storage Systems (ESS)
  Explosion-proof venting for residential, commercial, and grid-level ESS.

• Power Tools and E-Bikes
  Safety vents for compact high-power lithium-ion battery packs.

• Outdoor Lighting, CCTV, Sensors
  Waterproof and breathable protection for sealed enclosures.

• Communication Enclosures and Junction Boxes
  Maintains pressure balance and prevents condensation damage.

• Medical and Industrial Electronics
  Reliable gas venting for sensitive and sealed systems.

Why Choose PUW?

• Over 10 Years of ePTFE Innovation
  In-house production of high-quality ePTFE membranes and valves.

• Certifications
  ISO 9001, IATF 16949, and compliance with global safety standards.

• Full OEM/ODM Capabilities
  From concept to mass production — we support customization in size, burst pressure, membrane structure, installation style, and packaging.

• Global Supply Chain Support
  Serving over 100 countries across EV, energy, electronics, and IoT markets.

Frequently Asked Questions (FAQ)

Q1: Can I customize the valve for my battery pack or product enclosure?
Yes. We offer full customization of burst pressure, dimensions, membrane material, installation method, and labeling.

Q2: What is the difference between a waterproof vent and an explosion-proof valve?
Waterproof vents are designed for air exchange and environmental sealing. Explosion-proof valves add a safety function that releases internal pressure rapidly during emergencies.

Q3: Is your ePTFE membrane breathable and durable?
Absolutely. Our membranes provide long-term breathability, water/oil resistance, chemical resistance, and high thermal stability.

Q4: Do you offer samples or small-batch customization?

Yes. We support rapid sampling and small MOQ trial production for new projects.

Q5: What certifications do your products meet?
Our vents support IP67/IP68, UN38.3, UL battery standards, and RoHS compliance.