The hydraulic filter element replacing Donaldson P177040   

1. Product Introduction                                                                       

PLF series filter is installed on the different pressure lines of the hydraulic system;

it has high oil-passing capacity, low initial pressure loss, high dirt-holding capacity and so on,

which can meet the various requirements from the customers.  

2. Product Characteristics                                                                   

Filter basic construction

PLF series filter is composed of filter top cover and spin-on housing. Filter top cover is integral type,

according to the customer requirements, the flow direction and the mounting hole position can be custom-made.  

2.1 Housing material

Top cover material: Ductile cast iron
Filter bowl material: Carbon steel  

2.2 Seals

Perbunan (=NBR) (-30~+120°C);  Viton=FPM(-20~+200°C)

2.3 Filter element

Filter medium material

High strength carbon steel skeleton

2.4 Optional accessories

Electric clogging indicator: CS-V
By-pass valve (Setting 6bar)

2.5 Type of connection (chosen according to the filter type)

Metric thread connection; Inch threaded connection; Flanged connection

2.6 Symbols 

3. Type Selection and Technical Data                                                 

3.1 Order example

3.2 Technical Data

Note: 1)The sealing material is NBR, if FPM is needed, please contact us;

          2)* represents filtration rating.

         3)If inch threaded connection is needed, please contact us; 

4. Mounting Size                                                                                

4.1 Threaded connection  

 Note:Filter head is integral type,flow direction and mounting hole position can be custom-made, 

          for the details please consult us;       * represents filtration rating.

4.2 Flangede connection

Note: * represents filtration rating.

5.  Product Characteristic Curves                                                     

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.

    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  

    Our Strategic Partners                                                               

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