M4 Model HA-4A-1High Flow Vent Valve for EV Battery Packs and Energy Storage
2. Reinforced Sealing Structure: With a 2.0mm CS O-ring (3.0mm ID), compression ratio increases from 20% to 30% compared to 1.5mm CS versions. Under high vibration and wide temperature swings, this provides superior interfacial sealing, eliminating the risk of moisture creeping along threads.
3. Electrolyte Vapor Resistance: E-PTFE membrane exhibits excellent chemical inertness to lithium-ion battery electrolyte vapors (e.g., DMC, DEC, EMC), avoiding dissolution or swelling upon contact with volatile organics, ensuring zero airflow degradation over the battery pack's entire lifecycle.
4. Strengthened Construction: With a 9.8mm body diameter and 12mm installation height, wall thickness and thread engagement (1.7mm effective length) are increased over standard M4 models, supporting higher installation torque (3~5N·m recommended) suitable for automotive anti-loosening applications.
Key Features
- IP-rated Waterproof & Dustproof Protection
- High Airflow Design for Rapid Pressure Balance
- Corrosion-resistant Stainless Steel Construction
- Sealing O-ring Structure for Leak Prevention
- Stable Performance in Extreme Environments
high-performance Waterproof Vent Valve, specifically engineered for EV battery packs and energy storage systems (ESS). Designed for demanding industrial environments, this compact venting solution ensures stable internal pressure while maintaining reliable protection against water, dust, and environmental contamination.
In modern battery systems, pressure imbalance and condensation can significantly affect safety and performance. Our vent valve provides a controlled airflow path that helps regulate pressure changes caused by temperature cycling, improving overall system stability and extending service life.
designed to ensure reliable pressure equalization and long-term sealing stability in harsh operating conditions.
With a wide working temperature range from -40°C to 125°C and IP67-rated protection, this vent valve is built to maintain consistent performance even under severe outdoor exposure, dust-heavy environments, and rapid thermal cycling.
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Technical Parameters
| Parameter | Specification |
|---|---|
| Model | HA-4A-1 |
| Thread Size | M4 × 0.7 |
| Body Diameter / Wrench Size | 9.8mm / 12mm |
| Installation Height / Thread Length | 12mm / 1.7mm |
| O-Ring | 3.0mm ID × 2.0mm CS |
| Airflow Rate | 12ml/min (at ΔP=1KPa) |
| Water Entry Pressure | -120mbar (>1m water column) |
| Operating Temperature | -50°C ~ +150°C |
| Material | Stainless Steel + E-PTFE |
| Ingress Protection | IP68 & IP67 |
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