HA-2.5A Miniature Waterproof Vent Valve for Compact Sensors and LED Drivers
1. Ultra-Compact Design: The HA-2.5A is tailored for miniaturized equipment, with a body diameter of just 6mm, wrench height of 5.5mm, and thread length of 3.5mm. It occupies almost no additional housing space, making it an ideal protection solution for wearable devices, micro-sensors, and compact LED driver power supplies.
2. Precise Pressure Equalization: Equipped with an industrial-grade E-PTFE waterproof breathable membrane, it provides a stable 3ml/min gas exchange rate at ΔP=1KPa. This flow rate effectively offsets internal-external pressure differentials caused by component heating or sudden temperature drops, preventing premature seal aging due to repeated pressure cycling.
3. Extreme Environment Tolerance: The fully stainless steel housing, passivated for corrosion resistance, combined with the chemically inert E-PTFE membrane, maintains stable physical properties and breathability across a -50°C to +150°C range, withstanding polar cold or equatorial heat without degradation.
4. High-Level Sealing Protection: Supplied with a pre-installed O-ring (2.0mm ID × 1.5mm CS), the precision-machined thread ensures IP68/IP67 dust and water ingress protection after installation, withstanding continuous immersion at 1-meter depth, effectively blocking liquid water, dust, and salt mist.
HA-2.5A Series Waterproof Vent Valves are precision-engineered pressure equalization components designed to protect sealed electronic enclosures from condensation, moisture ingress, and pressure buildup. As shown in the product image, each valve is rated IP67 – meaning it is completely dust-tight and capable of withstanding immersion in water up to 1 meter depth for 30 minutes, ensuring reliable operation in outdoor, marine, and industrial environments.
Pressure Balance – Prevents housing deformation, seal fatigue, and negative pressure suction
Leak Prevention – Guarantees zero water ingress even under immersion conditions
Corrosion Resistance – Withstands harsh environments from -50°C to +150°C
Long-Term Reliability – Backed by 100% factory flow and leak testing
Product Display
Application Scenario
Sensors – Outdoor environmental monitors, pressure transmitters, gas detectors, and IoT sensing nodes rely on HA valves to prevent internal condensation and maintain measurement accuracy in fluctuating weather conditions. The tiny M2.5 thread fits seamlessly into miniature sensor housings without adding bulk.
LED Drivers – Sealed LED driver power supplies generate heat during operation. HA valves release built-up internal pressure to prevent seal rupture, while IP68-rated waterproofing protects against rain and washdown – extending driver life and reducing warranty claims for outdoor lighting systems.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | HA-2.5A |
| Thread Size | M2.5 × 0.45 |
| Body Diameter / Wrench Size | 6mm / 5.5mm |
| Installation Height / Thread Length | 5.5mm / 3.5mm |
| O-Ring | 2.0mm ID × 1.5mm CS |
| Airflow Rate | 3ml/min (at ΔP=1KPa) |
| Water Entry Pressure | -120mbar (equivalent to >1m water column) |
| Operating Temperature | -50°C ~ +150°C |
| Material | Stainless Steel + E-PTFE |
| Ingress Protection | IP68 & IP67 (dual-rated) |
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