High processing performance Flow rate up to 10,000 m3/h High throughput with compact dimensions Flow-optimized filter Maximum utilization of the filter area Isokinetic filtration and back-flushing Unbeatable Δp curve Long service life Components tried and tested in thousands of applications Excellent price-performance ratio Extensive standard equipment for real-world applications Highly reliable Fully automatic operation Reduced costs due to simple and space-saving installation Variable housing isometry Simple installation and commissioning Ready-to-operate unit Low maintenance costs Easy to service Guaranteed high quality filtrate Low maintenance Static seal between contaminated and clean side Flow rate 5T/H-7500T/H Filter degree 80-3500um Operating temperature 90 °C Material of filter housing Carbon steel (Corrosion protection for carbon steel filter housing) or stainless steel Power supply EPT EU Drain valve PT EU Position switch EU EU Control box EU EU  Model DDFLQ 100 DDFLQ 125 DDFLQ 200 DDFLQ 250 DDFLQ 300 DDFLQ 350 DDFLQ 400 DDFLQ 500 DDFLQ 600 DDFLQ 700 DDFLQ 800 DDFLQ 900  2  4  9 10 Suggest pre-treating equipment before automatic back-flushing filter, aim to avoid impact from particles to filter. High processing performance Flow rate up to 10,000 m3/h High throughput with compact dimensions Flow-optimized filter Maximum utilization of the filter area Isokinetic filtration and back-flushing Unbeatable Δp curve Long service life Components tried and tested in thousands of applications Excellent price-performance ratio Extensive standard equipment for real-world applications Highly reliable Fully automatic operation Reduced costs due to simple and space-saving installation Variable housing isometry Simple installation and commissioning Ready-to-operate unit Low maintenance costs Easy to service Guaranteed high quality filtrate Low maintenance Static seal between contaminated and clean side Flow rate 5T/H-7500T/H Filter degree 80-3500um Operating temperature 90 °C Material of filter housing Carbon steel (Corrosion protection for carbon steel filter housing) or stainless steel Power supply EPT EU Drain valve PT EU Position switch EU EU Control box EU EU  Model DDFLQ 100 DDFLQ 125 DDFLQ 200 DDFLQ 250 DDFLQ 300 DDFLQ 350 DDFLQ 400 DDFLQ 500 DDFLQ 600 DDFLQ 700 DDFLQ 800 DDFLQ 900  2  4  9 10 Suggest pre-treating equipment before automatic back-flushing filter, aim to avoid impact from particles to filter.
Auto Multi-Cartridge Back Flush Industrial Water Filters
General
Particle contamination in process water accelerates the rate of wear of system components. The particles suspended in the media also have detrimental effects on ends products. In order to protect the operational infrastructure and to guarantee shorter maintenance times, it is essential to have a filtration system to remove solid particles from operating fluids.
The automatic back-flushing filter has been highly useful. Numerous operators of power stations, district heating, sewage treatment plants, and manufacturing plants have relied on this dependable filter for many years.
Structure
Operate principle
The fluid to be filtered flows through the filter elements of the back-flushing filter, passing from the inside to the outside. Contamination particles then collect on the inside of the filter elements.
As the level of contamination increases, the differential pressure between the contaminated and clean sides of the filter increases.
Back-flushing
1.The gear motor rotates the flushing arm under the filter elements and ensures the contamination is discharged.
2.The contamination is flushed away through the open back-flushing valve.
3.The pressure drop between filtrate side and back-flushing line flushes a small amount of the filtrate back through the contaminated filter elements.
4.The contamination particles collected on the inside of the filter elements are loosened and flushed into the backflushing line via the flushing arm.
5.After the "back-flushing time per element" has expired, the back-flushing valve is closed. In this way, all the filter elements are back-flushed, one after the other.
A back-flushing cycle is terminated once all filter elements have been cleaned.
Backwash Cartridge Filters Structure is triggered:
- When the differential pressure trigger point is exceeded,
- By means of an adjustable timer
- By pressing the TEST button.
Advantages Optimum structure and back-flushing design
The special conical shape and configuration of the filter elements allow consistent flow, resulting in a low pressure drop and complete cleaning of the elements.
Very low-maintenance. Its robust design, specially developed for retrofitting, makes installation in both existing and new systems fast and cost-effective.
Pulse-aided back-flushing
On the control types EPT and PT, the flushing arm remains under the filter element for only a few seconds.
Â
Variable filter isometry
The inlet and outlet flanges as well as the back-flushing line can be configured in different positions. This means that the filter can be integrated easily into any system layout.
Â
Electromechanical design
Simple install. PLC controller and drop pressure test pipes connected already, connect with air source can into use.
Â
Parameter settableÂ
Users can set drop pressure and time on actual usage.Â
Performance
Full filtration performance after back-flushing
No interruption to operation
Continuous flow of filtrate even during back-flushing
Consistently high quality
Certified to ISO 9001
Optimum element geometry provides
consistent flow without reverse flow
through the filter elementConical filter elements
Global Presence
Worldwide Service
Customized adaptation to the particular application
Numerous equipment options
Individually adjustable control parameters
Additional dynamic element cleaning
with low loss of flushing fluidPulse-aided back-flushing
Costs
User intervention not required
Low operating costs
Safety guaranteed by Pedie function test
Maintenance Â
Â
Applications
Power industry
• Conditioning of industrial waterused to cool generators
• Filtration of sealing water to increase the service lifeof the turbine shaft floating ring seals in hydroelectric power stations
Â
Steel industry
• Filtration of process water to protect nozzlesand pumps in high pressure descaling
• Water conditioning for coolingblast furnaces and rolling mills
• Emulsion filtration in hot and cold rolling mills
• Filtration of rolling emulsions
Â
Paper industry
• Protection of all types of nozzles
• on paper machines
• Treatment of fresh water (e.g. river water)to be used for cooling
Â
Automotive industry
• Filtration of coolant lubricants
• Filtration of washing fluids
• Protection of machine tools
Â
Marine
• Pre-filtration forballast water conditioning systems
Â
Chemical industry
• Cooling water filtration
• Waste water filtration
• Filtration of chemicals
Â
Oil and gas industry
• Filtration of injection water
• Filtration of cooling water
• Filtration of service water
• Filtration of flushing water (pipeline flushing)
• Filtration solution for the subsea sector
Â
Water / waste water conditioning
• Protective filter before membrane systems
• Conditioning of service water in sewage treatment plants
Â
Mining
• Filtration of water for shield spraying
• Filtration of water for coal-cutting machinery
• Treatment of cooling water for mine ventilation
Technical specifications
Â
Maximum operating pressure
6, 10 or 16 bar (size-dependent)
Media
Low viscosity liquid, like:water, suspended liquid ≤60MM2/S
Drop pressure between outlet and drain
≥1.5bar
Power supply
Electric or pneumatic
Material of filter elements
Stainless steel 316
Material of internal parts
Stainless steel 304
Power supply
Electric or pneumatic:EPT
Electric: EU
Â
Motor
EU
EU
DP gauge
EU
EU
How to select model
Â
NO.
 Item.
Â
Â
Â
Â
Â
Â
Â
Â
Â
Â
Â
Â
 1
Inlet/outlet (DN)
 100
125Â
200Â
250
300Â
350Â
400Â
500Â
600Â
700Â
800Â
900Â
Flow rate(T/H)
 100
100
 200
400
 500
 800
 1000
 1500
2000
3000Â
4000Â
5000Â
 3
Liquid speed(M/S)
 3.54
 2.26
 1.77
1.7Â
1.96
 2.31
2.21
2.12Â
1.96Â
2.17Â
2.21Â
2.18Â
Motor power(KW)
 0.55
 0.55
0.55Â
0.55Â
0.55Â
0.75Â
0.75Â
0.75Â
1.1Â
1.1Â
1.1Â
1.1Â
 5
Drain drive power(KW)
 0.09
 0.09
0.09Â
0.09Â
0.09
 0.09
0.09Â
0.09Â
0.037Â
0.037Â
0.037Â
0.037Â
 6
Loss(Mpa)
 0.02-0.04
 7
Filter degree(um)
 80-3500
 8
DP(Mpa)
 0.01-0.15
Back flushing time (S)
 0-180
 10
Motor rotating speed (R/MIN)
 0.75
 11
Operate
 auto or manual
Filter degree
Â
 um
 100
 120
 150
 200
 400
 800
1500
 3000
 Mesh number
 150
 120
 100
 80
 40
 20
 5
Loss grid
Installation
Vertical install, foundation bolts fixed. Filters can't be seen as pipeline strength support. Pipeline diameter not less than standard drain butterfly valve.
Supply compressed air: make sure air clean, 2bar≤pressure≤8bar, air connection:G1,4" ISO228
Â
Automatic back-flushing filter
Pre-treating
 <500um
3mm
 >500um
10mm
Spare parts
Â
Auto Multi-Cartridge Back Flush Industrial Water Filters
General
Particle contamination in process water accelerates the rate of wear of system components. The particles suspended in the media also have detrimental effects on ends products. In order to protect the operational infrastructure and to guarantee shorter maintenance times, it is essential to have a filtration system to remove solid particles from operating fluids.
The automatic back-flushing filter has been highly useful. Numerous operators of power stations, district heating, sewage treatment plants, and manufacturing plants have relied on this dependable filter for many years.
Structure
Operate principle
The fluid to be filtered flows through the filter elements of the back-flushing filter, passing from the inside to the outside. Contamination particles then collect on the inside of the filter elements.
As the level of contamination increases, the differential pressure between the contaminated and clean sides of the filter increases.
Back-flushing
1.The gear motor rotates the flushing arm under the filter elements and ensures the contamination is discharged.
2.The contamination is flushed away through the open back-flushing valve.
3.The pressure drop between filtrate side and back-flushing line flushes a small amount of the filtrate back through the contaminated filter elements.
4.The contamination particles collected on the inside of the filter elements are loosened and flushed into the backflushing line via the flushing arm.
5.After the "back-flushing time per element" has expired, the back-flushing valve is closed. In this way, all the filter elements are back-flushed, one after the other.
A back-flushing cycle is terminated once all filter elements have been cleaned.
Backwash Cartridge Filters Structure is triggered:
- When the differential pressure trigger point is exceeded,
- By means of an adjustable timer
- By pressing the TEST button.
Advantages Optimum structure and back-flushing design
The special conical shape and configuration of the filter elements allow consistent flow, resulting in a low pressure drop and complete cleaning of the elements.
Very low-maintenance. Its robust design, specially developed for retrofitting, makes installation in both existing and new systems fast and cost-effective.
Pulse-aided back-flushing
On the control types EPT and PT, the flushing arm remains under the filter element for only a few seconds.
Â
Variable filter isometry
The inlet and outlet flanges as well as the back-flushing line can be configured in different positions. This means that the filter can be integrated easily into any system layout.
Â
Electromechanical design
Simple install. PLC controller and drop pressure test pipes connected already, connect with air source can into use.
Â
Parameter settableÂ
Users can set drop pressure and time on actual usage.Â
Performance
Full filtration performance after back-flushing
No interruption to operation
Continuous flow of filtrate even during back-flushing
Consistently high quality
Certified to ISO 9001
Optimum element geometry provides
consistent flow without reverse flow
through the filter elementConical filter elements
Global Presence
Worldwide Service
Customized adaptation to the particular application
Numerous equipment options
Individually adjustable control parameters
Additional dynamic element cleaning
with low loss of flushing fluidPulse-aided back-flushing
Costs
User intervention not required
Low operating costs
Safety guaranteed by Pedie function test
Maintenance Â
Â
Applications
Power industry
• Conditioning of industrial waterused to cool generators
• Filtration of sealing water to increase the service lifeof the turbine shaft floating ring seals in hydroelectric power stations
Â
Steel industry
• Filtration of process water to protect nozzlesand pumps in high pressure descaling
• Water conditioning for coolingblast furnaces and rolling mills
• Emulsion filtration in hot and cold rolling mills
• Filtration of rolling emulsions
Â
Paper industry
• Protection of all types of nozzles
• on paper machines
• Treatment of fresh water (e.g. river water)to be used for cooling
Â
Automotive industry
• Filtration of coolant lubricants
• Filtration of washing fluids
• Protection of machine tools
Â
Marine
• Pre-filtration forballast water conditioning systems
Â
Chemical industry
• Cooling water filtration
• Waste water filtration
• Filtration of chemicals
Â
Oil and gas industry
• Filtration of injection water
• Filtration of cooling water
• Filtration of service water
• Filtration of flushing water (pipeline flushing)
• Filtration solution for the subsea sector
Â
Water / waste water conditioning
• Protective filter before membrane systems
• Conditioning of service water in sewage treatment plants
Â
Mining
• Filtration of water for shield spraying
• Filtration of water for coal-cutting machinery
• Treatment of cooling water for mine ventilation
Technical specifications
Â
Maximum operating pressure
6, 10 or 16 bar (size-dependent)
Media
Low viscosity liquid, like:water, suspended liquid ≤60MM2/S
Drop pressure between outlet and drain
≥1.5bar
Power supply
Electric or pneumatic
Material of filter elements
Stainless steel 316
Material of internal parts
Stainless steel 304
Power supply
Electric or pneumatic:EPT
Electric: EU
Â
Motor
EU
EU
DP gauge
EU
EU
How to select model
Â
NO.
 Item.
Â
Â
Â
Â
Â
Â
Â
Â
Â
Â
Â
Â
 1
Inlet/outlet (DN)
 100
125Â
200Â
250
300Â
350Â
400Â
500Â
600Â
700Â
800Â
900Â
Flow rate(T/H)
 100
100
 200
400
 500
 800
 1000
 1500
2000
3000Â
4000Â
5000Â
 3
Liquid speed(M/S)
 3.54
 2.26
 1.77
1.7Â
1.96
 2.31
2.21
2.12Â
1.96Â
2.17Â
2.21Â
2.18Â
Motor power(KW)
 0.55
 0.55
0.55Â
0.55Â
0.55Â
0.75Â
0.75Â
0.75Â
1.1Â
1.1Â
1.1Â
1.1Â
 5
Drain drive power(KW)
 0.09
 0.09
0.09Â
0.09Â
0.09
 0.09
0.09Â
0.09Â
0.037Â
0.037Â
0.037Â
0.037Â
 6
Loss(Mpa)
 0.02-0.04
 7
Filter degree(um)
 80-3500
 8
DP(Mpa)
 0.01-0.15
Back flushing time (S)
 0-180
 10
Motor rotating speed (R/MIN)
 0.75
 11
Operate
 auto or manual
Filter degree
Â
 um
 100
 120
 150
 200
 400
 800
1500
 3000
 Mesh number
 150
 120
 100
 80
 40
 20
 5
Loss grid
Installation
Vertical install, foundation bolts fixed. Filters can't be seen as pipeline strength support. Pipeline diameter not less than standard drain butterfly valve.
Supply compressed air: make sure air clean, 2bar≤pressure≤8bar, air connection:G1,4" ISO228
Â
Automatic back-flushing filter
Pre-treating
 <500um
3mm
 >500um
10mm
Spare parts
Â
Model NO.: DDFLQ
Flow Rate: 5t/H-7500t/H
Filter Degree: 80-3500um
Operating Temperature: 90 °c
Drop Pressure Between Outlet and Drain: ≥1.5bar
Power Supply: Electric or Pneumatic
Material of Filter Housing: Carbon Steel or Stainless Steel
Material of Filter Elements: Stainless Steel 316
Material of Internal Parts: Stainless Steel 304
Application: Power Industry,Chemical Industry,Oil and Gas Indus
Trademark: PEIDE
Transport Package: Wooden Cases
Specification: cartridge filter housing with multi cartridge elem
Origin: China
Model NO.: DDFLQ
Flow Rate: 5t/H-7500t/H
Filter Degree: 80-3500um
Operating Temperature: 90 °c
Drop Pressure Between Outlet and Drain: ≥1.5bar
Power Supply: Electric or Pneumatic
Material of Filter Housing: Carbon Steel or Stainless Steel
Material of Filter Elements: Stainless Steel 316
Material of Internal Parts: Stainless Steel 304
Application: Power Industry,Chemical Industry,Oil and Gas Indus
Trademark: PEIDE
Transport Package: Wooden Cases
Specification: cartridge filter housing with multi cartridge elem
Origin: China