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

Focus on Corrosion-Resistant Nickel-Plated Model HA-4C 1

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Focus on Corrosion-Resistant Nickel-Plated Model HA-4C 3

Focus on Corrosion-Resistant Nickel-Plated Model HA-4C 4

Focus on Corrosion-Resistant Nickel-Plated Model HA-4C

The HA waterproof vent valve is widely used as a protection component in industrial electronic systems that require stable enclosure environments.
In automation control cabinets, it prevents pressure buildup that can deform seals or damage sensitive components. In power distribution units, it helps reduce condensation that could lead to electrical short circuits. In communication systems, it ensures stable internal conditions for long-term signal reliability.
The threaded installation structure supports integration into different enclosure types without complex modification. Its compact design makes it suitable for space-limited equipment while still delivering high airflow efficiency.
This makes it an essential accessory for improving operational stability and extending equipment lifespan in industrial environments.

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Key Application Fields

Introducing the corrosion-resistant Nickel-Plated Model HA-4C, designed for demanding environments like offshore wind farms, marine electronics, and coastal facilities. Its exceptional durability and resistance to harsh marine conditions ensure reliable performance, extending the lifespan of your equipment while minimizing maintenance costs.

●Offshore Wind: Turbine tower control cabinets, pitch system junction boxes

●Marine Electronics: Marine radar transceivers, GPS beacons, alarm control panels

●Coastal Facilities: Port crane electrical rooms, cross-sea bridge monitoring nodes

Focus on Corrosion-Resistant Nickel-Plated Model HA-4C 5

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Technical Parameters

Parameter	Specification
Model	HA-4C
Thread Size	M4 × 0.7
Body Diameter / Wrench Size	9.8mm / 12mm
Installation Height / Thread Length	12mm / 1.7mm
Airflow Rate	9ml/min (at ΔP=1KPa)
Water Entry Pressure	-120mbar (>1m water column)
Operating Temperature	-50°C ~ +150°C
Material	Steel,E-PTFE
Ingress Protection	IP68 & IP67

Key Product Features

Marine-Grade Corrosion Resistance :Features a high-quality mild steel sute with electroless nickel plating, successfully passing a 72-hour Neutral Salt Spray (NSS) test. Unlike stainless steel, the nickel plating provides sacrificial cathodic protection at scratches, effectively halting corrosion propagation—ideal for offshore buoys and shipborne radars.
Optimized Airflow Efficiency:Strikes the perfect balance between standard and high flow rates. It rapidly equalizes pressure in outdoor enclosures while minimizing moisture ingress, which is critical for high-humidity marine environments.
Comprehensive Chemical & Oil Protection: Utilizes an oleophobic and hydrophobic E-PTFE membrane that resists oil and organic solvents. It effectively blocks fuel vapors in engine rooms from entering control boxes, protecting internal circuitry from contamination.
Standardized Form Factor (Direct Drop-in Replacement):Designed with a 9.8mm body diameter, 12mm wrench size, and 1.7mm thread length. It is fully interchangeable with the HA-4A-1, allowing for seamless upgrades based on your corrosion protection needs.

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