EF series breather filter consists of oil filtering and air filtering.
The filter not only can prevent the particle impurities from interfusing, but also make sure the cleanliness of breathing air of the tank, so as to simplify the structure of the oil tank and convenient for customer usage.

Filter basic construction
The air filtering part of this filter adopts copper base powder metallurgic sintering filter chip,compared with non-metal filter, this filter has stable structure, high strength, and much easier to be cleaned and changed, and can bear the thermal stress, impact and high temperature. This oil filter screen adopts stainless steel wire with small oil flow rate resistance, and can efficiently filter the large particle impurities in the oil.
2.1 Top cover material
High strength carbon steel
2.2 Seals
Perbunan (=NBR)  
2.3 Filter mesh material
Cover material is high strength casting aluminum alloy
Skeleton material is carbon steel
Filter media is made of stainless steel wire  
2.4 Type of connection 
Flanged connecton

1. Technical data 

2. Mouting Size

DFFILTRI was founded in 1995, since then we devoted ourselves to research, develop and produce many kinds of hydraulic filters, air filters, hydraulic system accessories, cleaning and filtration equipments, pump valve components. DFFILTRI is our brand, which enjoys high popularity and it has successfully achieved the position both in China and across the world.
DFFILTER filtration technology testing center covers a total area of 450 square meters, of which, clean room area of 200 square meters, and cleanliness is up to 100,000 levels. The centre undertakes filtration technology inspection and testing for in-house science research, production and industry service.  
On-line particle counter of BETAB-HIAC/POYCO type (8000A/8000S) provided by HIAC/POYCO company in USA, and its supporting machine"Multi-pass test" and "single-pass test" implements ISO16889 new standard and other international standards perfectly
Testing center also has the developed equiment for filter performance testing, which can make the comprehensive examination for filter element/cartridge performance. These can insure that company's filter with high capacity, long life, high reliable in full compliance with our customer's  requirement.