Shangda’s metal waterproof breathable valve is made of aluminum alloy waterproof breathable valve, stainless steel waterproofbreathable valve, brass waterproof breathable valve. Shangda’s metal waterproof breathable valve is a two-way waterproof
breathable pressure relief valve, not a one-way vent valve. The metal waterproof and breathable valve is a new type of waterproofand breathable component The waterproof and breathable membrane (e-PTFE)is combined with other materials such as metal andsilicone rubber to form a sealed installation part. It can effectively prevent dust, water or other harmfu substances from entering whilemaintaining the pressure balance inside and outside the equipment. Ithas the advantages of stable performance, simple installation,prolonged product life cycle and high waterproof and breathable performance.
Shangda’s metal waterproof breathable valve: 1, air permeability 2, protection level.

work characteristics:
1. High-strength sealing: Unique limit design prevents O-ring from overflowing, and the design structure of groove position preventsO-ring from bursting out during installation and use, making the seal more tight and connecting the air valve with the obiect moreeffectively and tightly;
2.installation is convenient and quick: deep thread with a certain length of quide postion, can quickly find the position of installation.not easy to slip installation is convenient and quick, reduce maintenance costs3. High strength and firm structure:the inner wall of the ventilation valve installation position,the iveting structure design andinstallation are convenient, and the inner embedded cover design structure is firm, which can prevent falling off during use andstrengthen firmness;
4. high hardness and corrosion resistance: the use of metal material texture gloss high hardness and wear resistance,with highstrength corrosion resistance charactenistics, not easy to damage, not easy pitting and rust oxidation, more durable, extend theservice life.
5. waterproof breathable balance pressure:the use of e-PTFE expanded PTFE breathable membrane high permeability balancepressure,effectively reduce the stress of the shell seal. Continuous exhaust to avoid temperature rise, damage to components andnuts are provided with multiple ventlation holes, heat dissilpation to reduce pressure and reduce residual water droplets after rain, andreduce water accumulation or fog for a long time.

work characteristics:
1. High-strength sealing: Unique limit design prevents O-ring from overflowing, and the design structure of groove position preventsO-ring from bursting out during installation and use, making the seal more tight and connecting the air valve with the obiect moreeffectively and tightly;
2.installation is convenient and quick: deep thread with a certain length of quide postion, can quickly find the position of installation.not easy to slip installation is convenient and quick, reduce maintenance costs3. High strength and firm structure:the inner wall of the ventilation valve installation position,the iveting structure design andinstallation are convenient, and the inner embedded cover design structure is firm, which can prevent falling off during use andstrengthen firmness;
4. high hardness and corrosion resistance: the use of metal material texture gloss high hardness and wear resistance,with highstrength corrosion resistance charactenistics, not easy to damage, not easy pitting and rust oxidation, more durable, extend theservice life.
5. waterproof breathable balance pressure:the use of e-PTFE expanded PTFE breathable membrane high permeability balancepressure,effectively reduce the stress of the shell seal. Continuous exhaust to avoid temperature rise, damage to components andnuts are provided with multiple ventlation holes, heat dissilpation to reduce pressure and reduce residual water droplets after rain, andreduce water accumulation or fog for a long time.