Xiwangcun Industrial Park, Muye District, Xinxiang, Henan, China [email protected]
BDE moisture absorbing air filter is a respiratory protection device that is matched with oil and liquid storage containers. It adopts a vertical integrated structure and is equipped with a layered composite filtration unit. The upper layer has a large capacity moisture absorbing desiccant and the lower layer has a high-precision particle filter layer. It can simultaneously intercept moisture and dust entering the container air, control the relative humidity of the air below 40%, and achieve a particle filtration accuracy of up to 3 μ m. The transparent visual shell allows for intuitive observation of the desiccant status, and the standard threaded interface is compatible with most liquid storage devices' breathing ports, effectively preventing oil from being wet, emulsified, and having excessive impurities, providing reliable respiratory protection for closed liquid storage systems.
BDE moisture absorbing air filter is an air purification and protection device designed specifically for oil and liquid storage pressure vessels. It is the core filtering component of the breathing path of oil tanks and liquid storage tanks. During the breathing process of thermal expansion and contraction of the container with changes in oil temperature, it synchronously completes the drying and impurity filtration of the air entering the container, blocking the intrusion of external water vapor and dust into the internal medium from the source, avoiding oil moisture emulsification and excessive impurities, and providing basic respiratory protection for various closed liquid storage systems.
| Product brand | DFFILTRI |
| Model | BDE |
| Moisture absorption capacity | 100g~1000g optional |
| Applicable temperature | -30 ℃~100 ℃ |
The BDE moisture absorbing air filter adopts a vertical integrated structure design, with a high-strength impact resistant material shell and a layered filtration unit integrated inside. The upper layer is a large capacity moisture absorbing desiccant layer and the lower layer is a high-precision particle filtration layer. The dual protection structure can synchronously intercept water and solid impurities in the air. The moisture absorbing capacity covers the range of 100g to 1000g, and the relative humidity of the air entering the container can be controlled below 40%. The particle filtration accuracy can reach 3 μ m. The overall structure adopts a transparent visual design, and the operation and maintenance personnel can directly observe the color change of the desiccant from the outside without disassembling it to determine the moisture absorption saturation state. The bottom is compatible with a standard threaded interface and can be directly installed on the breathing port of various oil storage equipment. The working temperature covers -30 ℃ to 100 ℃ and can be used in most conventional situations. Long term stable operation under industrial conditions.



BDE moisture absorbing air filters can cover various respiratory protection scenarios of closed liquid storage systems, suitable for air breathing purification of various hydraulic station oil tanks and gearbox oil tanks. They can also be matched for external air drying and filtration of transformers and energy storage tanks in the power industry. At the same time, they are suitable for respiratory port protection of large liquid storage tanks in engineering machinery and metallurgical equipment. They can also serve as the core protective device for respiratory pathways in lubricating oil storage stations and fuel transfer tanks, avoiding external water vapor and dust from entering the medium and ensuring the cleanliness and dryness of the oil.



The BDE moisture absorbing air filter adopts a double-layer composite protective structure, which synchronously realizes moisture adsorption and particle interception. Compared with a single function breathing filter, the protective effect is improved by more than 60%. The transparent visual shell design makes the desiccant status clear at a glance, greatly reducing the difficulty of operation and maintenance inspection. The large capacity moisture absorbing layer can achieve an ultra long replacement cycle, reducing the frequency of daily operation and maintenance. The standard universal interface can be directly replaced and installed without modifying the original equipment. The overall structure has no complex moving parts, and the long-term operation stability is strong, with almost no risk of failure. It can effectively extend the service life of internal oil and reduce the maintenance cost of the entire system's media.
If it is found that the color changing speed of the desiccant far exceeds the normal cycle, priority should be given to checking the sealing of the liquid storage container, investigating whether there are additional leakage points in the respiratory pathway, and after sealing the leakage points, the normal moisture absorption cycle can be restored; If there is poor breathing after installing the filter, check whether the internal filter layer is blocked by dust, clean or replace the filter layer to restore normal ventilation capacity; If there is slight oil leakage at the interface, stop the machine and check if the bottom sealing gasket is in place. Tighten the installation thread evenly or replace the seal to solve the leakage; The moisture absorption efficiency of several desiccants has significantly decreased. Simply replacing them with new desiccants of the same specifications can restore the product's drying and protective properties.