GU-H-25x20-F-P Hydraulic Pressure Line Filter with Top Cover and Spin-on Housing

Specifications

                        GU-H-25x20-F-P Hydraulic Pressure Line Filter with Top Cover and Spin-on Housing

1. Product introduction

GU-H series filter is installed in the pressure pipeline of hydraulic system, used to clear away or prevent the pollutants invading generated in the hydraulic oil, prevent valve core stuck, throttling the small holes, cracks and damp holes blocking, and excessive wear of hydraulic components etc. failures happening; This series of filter is equipped with the bypass valve and check valve, accordingly have the dual protection, also with differential pressure indicator, when the element is clogged to oil inlet/outlet and pressure difference reaches 3.5bar, the signal is sent out, the filter element should be cleaned or replaced.  

2. Product characteristics

Filter basic construction

GU-H series filter is composed of the top cover and spin-on housing.  

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 4bar)

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

Metric thread 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 Threaded connection 

4.2 Flangede connection

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.

     Note: If any other requriements, please consult 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 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