Hydraulic agricultural filter from filter producer  

1. Product introduction                                                                       

RFB series filter is applied in the return line of hydraulic systems for fine filtration,

filtering the metal particles and the rubber impurities caused by the wear in the hydraulic system,

so as to keep the oil clean. It has permanent magnet, check valve, by-pass valve etc. device.  

2. Product characteristics                                                                   

Filter basic construction

This return filter is composed of filter cover and filter bowl; they can be installed on every side of the tank.

Filter bowl components can be connected by spinning and flange connection,

filter cover and filter bowl can be connected with thread.

2.1 Housing material

Cast aluminum, carbon steel
2.2 Seals

Perbunan (= NBR)

2.3 Filter element

Filter medium material

High strength carbon steel skeleton

2.4 Optional accessories

CYB -ⅠClogging indicator ≤ DC24V

CY-ⅡClogging indicator ≤ 220V

2.5 Type of connection (choose according to filter model)

Flanged connection  

2.6 Symbols 

3. Type selection and technical data                                                 

3.1 Order example 

3.2 Technical Data

Note:  * represents filtration rating. 

4. Mounting Size                                                                                

5.  Product Characteristic Curves                                                      

The total filter assembly pressure drop is the sum of housing and element pressure drop,filter selection calculated as per the following curves.

5.1 Housing pressure drop / flow rate characteristic curves 

Housing pressure drop /flow rate characteristic curves are according to ISO3968, and suitable for the mineral oil with density 0.86 kg/dm³ and kinematic viscosity 30 mm²/s.

5.2 Differential pressure / flow characteristic curves of filter element

The characteristic curves of filter element are suitable for the mineral oil with kinematic viscosity 30 mm²/s. Differential pressure and viscosity is proportional.

6.  About Us                                                                                        

♦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.

♦The testing centre can take 7 tests of hydraulic filter performance evaluation, they are as follows:

ISO 2941 Verification of collapse/burst resistance

ISO 2942 Verification of fabrication integrity and determination of the first bubble point

ISO 2943 Verification of material compatibility with fluids

ISO 3723 Method for end load testing

ISO 3724 Verification of flow fatigue characteristics

ISO 3968 Evaluation of pressure drop versus flow characteristics

ISO 16889 Multi-Pass method for evaluating filtration performance      

7.  Our Strategic Partners                                                               

P.S These are just part of our clients, in no particular order.