Metal Waterproof Breather Valve
In modern industrial production, as a crucial protective component, the metal waterproof and breathable valve is playing an increasingly important role. This seemingly simple device is actually an invisible guardian ensuring the safe operation of equipment.
The working principle of the metal waterproof and breathable valve is based on precise physical design. It adopts a special multi-layer metal filter screen structure and achieves selective permeation by controlling the size and distribution density of the pores. Liquid water cannot pass through the micro-pores due to the effect of surface tension, while gas molecules can pass through freely. This design ingeniously solves the technical problem of balancing waterproofing and breathability, demonstrating the ingenuity of engineering design.
In the field of medical equipment, the application of metal waterproof and breathable valves is particularly important. It is widely used in precision equipment such as medical imaging devices and in vitro diagnostic instruments, effectively preventing liquid from seeping in and ensuring the balance of the internal air pressure of the equipment. This protection mechanism not only extends the service life of the equipment but, more importantly, guarantees the accuracy and reliability of medical diagnosis.
With the progress of manufacturing technology, the performance of metal waterproof and breathable valves has been continuously improved. The application of laser micro-hole processing technology has enabled the pore accuracy to reach the micron level, significantly enhancing the performance of the valves. The introduction of new antibacterial coatings has given it a broader application prospect in special fields such as medicine.
Looking ahead, metal waterproof and breathable valves will develop towards the direction of multi-functional integration. Intelligent valves integrated with functions such as temperature and humidity sensors and pressure monitoring can provide more comprehensive protection for the equipment. This innovation will push the protective technology of industrial equipment to a new height.
Product dimension

Ø | H | L | L1 | MP |
13 | 11.5 | 23.5 | 14.5 | M5*0.8 |
Product parameters
Air permeability | 3ml/min atp=1KPa |
Water blocking pressure | -120mbar(>1M) |
Applicable temperature | -50℃~150℃ |
Protection level | IP68 or IP67 |
Advantages of Waterproof Breathable Valves
Excellent waterproof performance
Good air permeability
Dust and dirt prevention
Chemical corrosion resistance
Long lifespan and reliability
Miniaturization and integration