High Quality Double Cylinders Oil Filter, Self-Seal Oil Return Filter, Double Cylinder Oil Filters Suppliers in China

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STF Series Double Cylinders Return Oil Filter

  • STF Series Double Cylinders Return Oil Filter
  • STF Series Double Cylinders Return Oil Filter
  • STF Series Double Cylinders Return Oil Filter
  • STF Series Double Cylinders Return Oil Filter

STF Series Double Cylinders Return Oil Filter

    Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
    Terms of Trade: FOB,CFR,CIF,EXW,FCA,CPT,CIP
    Min. Order: 100 Piece/Pieces
    Delivery Time: 10 Days
    Packaging: Plywood box or standard export packing
    Productivity: 50000 PCS/YEAR
    Transportation: Ocean,Land,Air
    Place of Origin: XINXIANG, CHINA
    Supply Ability: 50000 PCS/YEAR
    Certificate: ISO9001
    HS Code: 8421999090

Basic Info

Model No.: FST-STF-25L~1300L/min

Product Description

STF Series Double Cylinders Return Oil Filter (FST-STF-25L~1300L/min):

Production describle:

Dual-barrel filter, also called double-barrel oil return pipeline filter, is composed of two single-barrel filters and two six-way reversing valves, which have simple structure, convenient use, and a by-pass valve and filter core pollution clogging transmitter to ensure the safety of the system.

The filter is suitable for continuous operation. The hydraulic system oil return pipeline is not allowed to be cleaned when the filter element is shut down. The filter is used to filter the mechanical and chemical impurities in the system and keep the oil flowing back to the tank clean. The filter consists of a two-position six-way directional valve and two return pipeline filters.
Characteristics and working principle:

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 main engine operation. Just open the pressure balance valve and turn the reversing valve. The other filter can take part in the operation and then replace the blocked filter core.

The main performance features are as follows:

1. When a filter core is blocked and the pressure difference between the inlet and outlet reaches 0.35mpa, the transmitter will send out a signal. At this time, the balance valve on the reversing valve should be opened in time, and the reversing valve should be rotated. Turn off the oil of the filter that has blocked the filter, and close the balance valve to keep the backup filter in working condition and keep the system connected. Then replace the blocked filter.

2. When the filter is clogged, no one handles the trouble after the transmitter alarm, and the pressure difference between the inlet and outlet increases to 0.4Mpa, the bypass valve installed in the upper part of the filter will open itself, open the oil circuit, avoid filtering damage, and ensure the system runs as usual.

3. The filter element adopts paper, chemical fiber, mesh and line-gap filter, which can meet the different requirements of the system.


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.

Technical Data:

STF Series Double Cylinders Return Oil FilterDouble Cylinders Oil FilterDouble Cylinder Oil FiltersSTF Series Double Cylinders Return Oil FilterSelf-Seal Oil Return Filter

Henan Sinofiltec Technology Co.,Ltd


Sinofiltec technology Co. Ltd, which is a professional manufacture & exporter of filter medium, filter cartridges and filtration equipments we have developed series of filters for the industrial fluids polluted, which are based on the requirements for the filtration on the aerospace and military equipments.

From the filter medium, filter cartridges and strainers to the filtration systems, we have the technical and production departments for the process, there will be a dynamic tracking management for the whole process.

We will strictly implement the international standards of the filter medium, filters and equipments We will design, develop and produce according to the fluids, working conditions and the special requirements of the customers.

There are three series of products such as water filters, air filters and hydraulic filters With nearly 30 years development, our products have been sold widely at home and abroad, which are deeply trusted by our customers.

We offer the high quality filters and filtration projects for global customers. To save the expensive operating cost for our customers.

Sinofiltec technology Co.. Ltd would like to comunicate and cooperate with customers widely at home and abroad, and truly to create more value for our customers, truly to achieve the best use of things & the value for money.

Company Info

  • Company Name: Henan Sinofiltec Technology Co.,Ltd
  • Representative: Jia rui qing
  • Product/Service: Filter Medium , Wedge Wire Filter Elements , Filter Assemblies , Hydraulic Filters , Sintered Wire Mesh , Water Filters
  • Capital (Million US $): 5800000RMB
  • Year Established: 1993
  • Total Annual Sales Volume (Million US $): US$5 Million - US$10 Million
  • Export Percentage: 91% - 100%
  • Total Annual Purchase Volume (Million US $): US$1 Million - US$2.5 Million
  • No. of Production Lines: 5
  • No. of R&D Staff: 5 -10 People
  • No. of QC Staff: 11 -20 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): 30,000-50,000 square meters
  • Factory Location: Xiyi street, No.2 indutrial park of the high & new industrial development zone
  • Contact Person: Mr. Keven Jia
  • Tel: 86-373-7039618
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