Home > Products > Hydraulic Filters > Duplex Filters

Duplex Filters

and have the certification ISO/TS16949:2009. We are dedicated to supply you high quality products with reasonable price. for Duplex Filter,Duplex Cartridge Filter,Duplex Type Edible Oil Filter,Duplex Lube Oil Filter creative and responsible crew to establish customers with the multi-win principle.
SDRLF Duplex Large Flow Return Filter

Packaging: Plywood box or standard export packing

Min. Order: 1 Set/Sets

Model No.: SDRLF type

Transportation: Ocean,Land,Air

SDRLF Type Duplex Large Flow Return Filter FST DLRF 1300 9100L min Production describle The double cylinder large flow oil return filter is composed of two single barrel filters and two six way reversing valves The structure is simple the operation...
China Duplex Filters Suppliers

Duplex Filters


Duplex filters, also called double-barrel return pipeline filters, are composed of two single-barrel filters and two six-way reversing valves, which have simple structure, easy to use, and with by-pass valve and filter core pollution clogging transmitter, in order to ensure the safety of the system.


The double-barrel filter is mainly installed on the return pipeline of the hydraulic system. Various kinds of dirt such as abrasive particles produced by various hydraulic components in the working process can be intercepted by setting the Oil Filter of the return pipeline to avoid returning to the fuel tank again. Inhaled again by a hydraulic pump. The allowable pressure difference of the oil filter in the return pipeline is 0.3 ~ 0.5mpa. according to the different pressure level. The accuracy is determined according to the oil contamination requirement. In the working process, when the filter core is clogged to a certain extent and the filter core needs to be cleaned or replaced, it is necessary to stop the mainframe operation to replace the filter element, which is not only a waste of time but also can not meet the needs of continuous operation of the main engine. The double-barrel filter can effectively solve the defect of single-barrel filter and can clean or replace the filter core without stopping to ensure the mainframe work normally and continuously. When one filter core is blocked and needs to be replaced, it is not necessary to stop the mainframe operation. Just open the pressure balance valve and turn on the reversing valve. The other filter can take part in the operation and then replace the blocked filter element


1. Metallurgy: used for filtration of rolling mill, continuous casting machine hydraulic system and various lubricating equipment.

2. Petrochemical: separation and recovery of products and intermediate products in refining and chemical production, filtration of oil well water and natural gas.

3. Textile: purification and uniform filtration of polyester melt during drawing, protection and filtration of air compressor, deoiling and dewatering of compressed gas.

4. electronics and pharmacy: reverse osmosis water, deionized water pre-treatment filtration, washing liquid and glucose pretreatment filtration.

5. Thermal power and nuclear power: gas turbine, boiler lubrication system, speed control system, bypass control system oil purification, feed water pump, fan and dust removal system purification.

6. Processing equipment: paper machinery, mining machinery, injection molding machine and large precision machinery lubrication system and compressed air purification, tobacco processing equipment and spraying equipment filtering.

Product types:

SZU-A series Duplex oil return Line Filters

· SQU-A series Duplex oil return line filters

· SWU-A series Duplex oil return line filters

· SXU-A series Duplex oil return line filters

· SRLF series Duplex oil return line filters

· SRFB series Duplex tank mounted oil return filters

· SRFA Duplex tank mounted mini-type oil return filters

· SMF series Middle pressure line filters

· SLLF series Duplex lubricant filters

· SGF series Duplex high pressure line filters

· SDRLF series Duplex high flow rate oil return line filters

Double switching filterdouble-barrel return pipeline filtersSZU-A series Duplex oil return line filters