Waterproof and breathable valve series
In the field of modern industry, the waterproof breathable valve, as a crucial protective component, is playing an increasingly important role. This seemingly simple device actually embodies sophisticated engineering design and advanced material technology. The main function of the waterproof breathable valve is to allow gas to pass freely while preventing liquid from seeping in. This unique property makes it an ideal choice for protecting the internal environment of equipment.
The working principle of the waterproof breathable valve is based on the subtle combination of materials science and fluid dynamics. Its core material is usually expanded polytetrafluoroethylene (ePTFE) film. This material has a unique microporous structure, and the pore size is precisely controlled. It can not only block the penetration of liquid water but also allow gas molecules to pass freely. This selective permeability enables the waterproof breathable valve to effectively balance the pressure inside and outside the equipment while preventing the intrusion of moisture, dust, and other pollutants.
Product dimension

L | L1 | Ø | MP |
15.2 | 7 | 10.8 | M5*0.8 |
Product parameters
Air permeability | 7mlmin atp=1KPa |
Water blocking pressure | -120mbar(>) |
Applicable temperature | -50℃~150℃ |
Protection level | IP68 or IP67 |
Advantages of Waterproof Breathable Valves
1.Excellent waterproof performance
2.Good air permeability
3.Dust and dirt prevention
4.Chemical corrosion resistance
5.Long lifespan and reliability
6.Miniaturization and integration