SDA Shangda waterproof ventilation valve can also be applied to fans and motors, providing an effective solution to protect productsand making end products more reliable and safe.
power motor produce problems:
motor starts to rise rapidly from normal temperature, and its interior expands in a very short time. The newly added solvent exceeds
1L, and the pressure can reach 1.22 ATM,anyway, such a large pressure in the motor sealing cavity at low temperature willead to strong adsorption, dust,water, oil and otherliquid gases are sucked in, so the key factors that cause problems and affect the normal operation and timely life of the motor arehere.

problems arising from outdoor fans:
1. The fan generates a lot of heat when itis working, but when the fan is tumed on,the fan blades of the fan can take away the heat,also known as air-cooled heat dissipation. At this time, the temperature is at the normal temperature of 20 C-30 C;2. Once the machine stops, the fan blade stops, and the temperature rises rapidly immediately. After actual measurement, it risesfrom 28 C to 80 C in just 1min, and it bears huge negative pressure in the EC control box less than 1L;3. If the fan just stops when it rains, it will immediately absorb water, causing water in the EC control box cavity to cause a shortcircuit, and the fan will fail or even be scrapped when it is started next time.SDA Shangda provides protection solutions for outdoor motors with waterproof ventilation valves1. Balance the internal and external pressure difference per unit time to avoid accumulation and inhalation of foreign objects,
water, oil, dust, etc. into the machine;
2. waterproof breathable,to avoid water vapor into the cavily, change the structure of the machine, designers in the past throughthe structure of waterproof breathable can not fundamentally solve the problem;
3. It is easy to install,just open a hole in the shell or accessory and screw it in; 4. Extend the service life of the machine.SDA Shangda Waterproof Ventilation Valve: