RFA-400X10F-Y Return Filter from the Xinxiang factory

                        RFA Tank Mounted Filter/Hydraulic Return Oil Filter with Bypass Valve, Diffuser and Clogging Indicator

1. Product introduction

This kind of filter can be used in hydraulic system for oil return fine filtration, and can keep the oil back to tank clean. This filter can be installed on the cover of the tank and the filter bowl is immersed in the oil tank, the direct return oil is adopted, it is more convenient to replace the filter element.  

2. Product characteristics

Filter basic construction

This return filter consists of filter cover and filter bowl,equipped with bypass valve,diffuser,clogging indicator etc device.  

2.1 Housing material

High strength casting aluminum alloy; high strength aluminum tube  

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 models)

Metric threaded connection; Flanged connection  

2.6 Symbols  

3. Type selection and technical data 

3.1 Order example 

3.2 Technical Data

4. Mounting Size

4.1  Inlet threaded Conntction;   4.2  Inlet flanged Connection  

 • Table 1:RFA-25~160 threaded connection dimension  

•Table 2:RFA-250~800 flanged connection dimension 

Note: 1)The inlet flange plate, connecting screw and seals etc. accessories, which can be provided by us, the user only needs to prepare φQ tube for the welding.

            2) 2-m is the screw hole with M18×1.5 ,which can be used for installing the indicator in each side or as the small oil returning hole and equipped with plug.

            3) * represents filtration rating.

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. 

♦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 Advantages:

1) Adopting the new industrial concept

2) Establishing world-class R&D and testing center

3) Possessing powerful technical force and R&D strength

4) Having the world's advanced production equipment

5) Producing high quality products that comply with international and national standards

6) Outstanding quality products to meet or exceed customer's expectation

7) Professional and wholehearted pre-market after-sales service

 ♦Our product mainly interchangeable with following brand 

PALL, HYDAC, MAHLE, PARKER, ARGO, FILTREC, STAUFF, VICKERS, EPPENSTEINER(EPE),TAISEI KOGYO, INTERNORMEN, MANN, DONALDSON, HY-PRO, MP-FILTRI, CAT, BENZ, VOLVO, CUMMINS, ALLISON,CLARK, EPE, SCHROEDER, LIEBHERR, DOOSAN, KOBELCO, JCB, FIEETGUARD, DEUTZ, SOFIMA, DETROIT, SACMI, KUBOTA,SAKURA, WIRTGEN, FAIFILTRI, SCHAEFF, POCLAIN, LUBERFINER, DYNAPAC, PALFINGER, SOFRANCE, VALMET, CECCATO, BOBCA, MCQUDY, COMMERCIAL, TAMROCK, SAUER-DANFOSS, PERKINS, JP-HBYB, LINDE