Duplex Oil Filters RFLD Hydraulic Double Oil Return Filter

Filter basic construction

RFLD series filters are connected by a switch valve, drift diameter DN80 and above is equipped with pressure balance pipeline; below DN80, the balance valve is put in change-over valve body.

This structure reduces the pressure impact on the filter when switching valve, standard filter is with vent hole, relief hole, and mounting holes of clogging indicator.  

 2.1 Housing material

Optional: Ductile iron, cast steel  

 2.2 Seals

Perbunan (=NBR)

 2.3 Filter element

Filter medium material

High strength carbon steel skeleton

 2.4 Optional accessories

Without clogging indicator, with steel plug

Visual clogging indicator: CM-03

Electrical clogging indicator: CM-05

Combined visual /electrical clogging indicator: CM-08

Bypass valve (setting 6 bar)

 2.5 Type of connection 

Inch threaded connection; Flanged connection

 Type selection and technical data 

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.

Xinxiang Dongfeng Filter Technology Co., Ltd.

Add: No.42, West of Beigan Road, Xinxiang, Henan, China (mainland)

Telephone: 86-373-2677957

Mobile Phone: +86-18336074703

Fax: 86-373-2634868

Website: