iP67waterproof means that the equipment has Class 6 dustproof and Class 7 waterproof capability.Specifically, iP67 class certification equipment can protect dust from entering (overall prevention of contact,protection of dust penetration), and at the same time can protect short-term liquid immersion (anti-immersion), and can have a maximum anti-immersion capability of 30 minutes in water up to1 meter deep.iP68waterproof refers to a waterproof rating of 8. That is to say, under the specified time and the specifiedwater depth, the article will not be damaged due to immersion and cannot be used.

iP67andiP68waterproof grade of difference is:
two characteristics are different.1). The first characteristic dust level (the first number in the code) is divided into six levels, briefly describingthe definition:
1. 0-without protection;1-can be prevented50mmsolid(is not for electronic products);2-can beprevented12.5mmsolid;
2. 3-can be prevented2.5mmsolid(Screw Size);4-can be prevented1mmsolid
3. 5-can prevent enough dust to cause harm(from5start to be dustproof;6-Completely prevent dustintrusion.
2). The second characteristic waterproof rating (the second number in the code) is divided8levels, briefdescription definition:

description definition:
O-without protection
1-can eliminate the influence of vertical water drops2-can be used in the vertical direction.15degrees have protective effect(normal rain weather)3-can be eliminated with the vertical60degrees of spray-like water droplets4-can eliminate the harmful effects of splashing water droplets from different directions(for industrialbuildingsIP54standard)
5-eliminates deleterious effects on the jet flow from nozzles in all directions(outdoor systems, such as cars,etc.,IP65standard)
6-can eliminate the harmful effects of strong jet water flow from nozzles in all directions7-to water0.15-1m, continuous30minutes, the performance is not affected, no water leakage8-to water1.5-30m, continuous30minutes, the performance is not affected, no water leakageOur waterproof ventilation valve and other protective products are based on relevant tests.GB 4208-2017/EC 60529-2001Enclosure protection class(PCode)’standard requirements, the enclosure protectionlevel of all types of products is qualified. test; High detection levellP68.

Shangda’s waterproof breathable valve, waterproof breathable membrane, explosion-proof pressurerelief valve and other products can reach the national standard of waterproof grade.Our company’s waterproof and breathable products have been tested as follows:Corrosive gas test, salt spray test, temperature test, flame retardant anti-ultraviolet test, continuous saltspray test, humidity test, protection level test.
Shangda waterproof and breathable products are:
1. Waterproof breathable valve has the advantages of high strength sealing, firm structure, convenientinstallation, wear resistance and corrosion resistance, waterproof breathable balance pressure differencedustproof and antifouling, anti-condensation fog and anti-oil.
2. The advantages of explosion-proof pressure relief valve are: dual-channel spring pressure relief, safe andrepeatable detection, fast charging design, high protection service life, easy installation of general parts,high corrosion resistance.
3. The advantages of waterproof breathable membrane are: high-performance eptfe membrane has highparticle capture rate, large flow rate when inlet pressure is low to adjust water, waterproof breathable candissipate heat and balance pressure in micro environment, and has chemical resistance and inertness.