Aerospace-Grade Vibration Isolator Manufacturer Offering One-Stop Shock And Vibration Solutions

Focus on Long-Thread M5 Model HA-5A-1

Electronic systems operating in sealed environments often face challenges related to heat accumulation and pressure imbalance. The HA vent valve is designed to solve these issues by providing controlled air permeability while maintaining full environmental sealing.
Its PTFE-based breathable membrane ensures that internal humidity can escape while preventing external contaminants from entering the enclosure.
By stabilizing internal conditions, it reduces stress on electronic components such as circuit boards, sensors, and power modules.
This leads to improved operational stability and reduced maintenance requirements, especially in applications where equipment is deployed in remote or inaccessible locations.

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Key Application Fields

Experience unparalleled durability and precision with the Long-Thread M5 Model HA-5A-1. Engineered for heavy-duty applications in construction machinery, rail transit, and mining equipment, this model boasts exceptional strength and reliability, ensuring optimal performance and safety in the most demanding environments. Choose HA-5A-1 for long-lasting value.

● Construction Machinery: Excavator electronic monitoring panels, crane moment limiter control boxes

● Rail Transit: Train braking control units, switch point controllers

● Mining Equipment: Underground communication substations, explosion-proof junction boxes

Technical Parameters

Parameter	Specification
Model	HA-5A-1
Thread Size	M5 × 0.8
Body Diameter / Wrench Size	9mm / 9mm
Installation Height / Thread Length	9mm / 5.4mm (effective length greater)
Airflow Rate	3ml/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

Core Advantages

All-Stainless Impact Resistance

With a 9mm body diameter and reinforced wall thickness, the valve withstands impact energy ≥50J, meeting construction machinery impact protection standards.

Stable Low-Flow Output

At 3ml/min, the airflow is suitable for small sealed cavities (≤3L), avoiding rapid pressure changes that could perturb sensitive internal pressure sensors. In railway door control systems, this characteristic ensures precise pneumatic assist operation.

Large-Diameter Sealing Ring

The O-ring features a 4.0mm ID and 2.0mm CS—the largest in the series. The increased contact area provides reliable sealing on rough cast surfaces, compensating for surface irregularities that could otherwise cause leakage.

Extended Thread for Enhanced Retention

With 9mm thread length—over twice that of standard M5—it ensures ≥6 fully engaged threads in aluminum die-cast or bent-sheet thick-wall housings. This effectively resists continuous vibration and shock from equipment operation, preventing valve loosening—particularly critical for excavator and crane onboard controllers.

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