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Peide Water Treatment Equipment Co., Ltd.

Industrial Water Filter, Industrial Water Treatment, Water Treatment Plant manufacturer / supplier in China, offering Industrial Automatic Back-Flushing Filter, 120W-600W Water Treatment Machine for Cooling Recyclable Water, Recycling Water Treatment Equipment for Boiler Water Treatment System and so on.

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Industrial Automatic Back-Flushing Filter

FOB Price: US $480-500 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $480-500/ Piece
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Production Capacity: 2, 000PCS/Year
Transport Package: Woodencase
Payment Terms: L/C, T/T, D/P, Paypal, Money Gram, Western Union

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Basic Info
  • Model NO.: DDFLQ
  • Motive Force: Electric power
  • Performance: Efficient Filtration
  • Flow Rate: 5t/H-7500t/H
  • Trademark: PEIDE
  • Origin: China
  • Usage: Environmental Protection
  • Style: Vertical
  • Certification: SGS, ISO
  • Filtration Ratings: 25micron to 3 mm
  • Specification: ISO9001: 2008
  • HS Code: 8421299090
Product Description

Industrial Automatic Back-Flushing Filter

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.
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.

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.
Automatic back-flushing is triggered:

- When the differential pressure trigger point is exceeded,
- By means of an adjustable timer
- By pressing the TEST button.

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.
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.
Electromechanical design
Simple install. PLC controller and drop pressure test pipes connected already, connect with air source
can into use.

Parameter settable 

Users can set drop pressure and time on actual usage. 

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
Full filtration performance after back-flushing

Isokinetic filtration and back-flushing

No interruption to operation
Continuous flow of filtrate even during back-flushing
Consistently high qualityCertified to ISO 9001

Unbeatable Δp curve
Optimum element geometry provides
consistent flow without reverse flow
through the filter element

Conical filter elements
Global PresenceWorldwide Service

Long service life

Components tried and tested in thousands of applications

Customized adaptation to the particular application
Numerous equipment options
Individually adjustable control parameters
Additional dynamic element cleaning
with low loss of flushing fluid
Pulse-aided back-flushing


Excellent price-performance ratio

Extensive standard equipment for real-world applications

Highly reliable
User intervention not required
Low operating costs

Fully automatic operation

Reduced costs due to simple and space-saving installation

Variable housing isometry

Simple installation and commissioning
Safety guaranteed by Pedie function test

Ready-to-operate unit


Low maintenance costs

Easy to service

Guaranteed high quality filtrate
Low maintenance

Static seal between contaminated and clean side

Industries and 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
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
Paper industry
 Protection of all types of nozzles
on paper machines
 Treatment of fresh water (e.g. river water)to be used for cooling
Automotive industry
 Filtration of coolant lubricants
 Filtration of washing fluids
 Protection of machine tools
 Pre-filtration forballast water conditioning systems
Chemical industry
 Cooling water filtration
 Waste water filtration
 Filtration of chemicals
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
Water / waste water conditioning
 Protective filter before membrane systems
 Conditioning of service water in sewage treatment plants
Filtration of water for shield spraying
Filtration of water for coal-cutting machinery
Treatment of cooling water for mine ventilation
Technical specifications

Maximum operating pressure
6, 10 or 16 bar (size-dependent)

Flow rate


Filtration ratings

25 μm to 3 mm

Operating temperature

90 °C

Low viscosity liquid, like:water, suspended liquid ≤60MM2/S
Drop pressure between outlet and drain≥1.5bar
Power supplyElectric or pneumatic

Material of filter housing

Carbon steel (Corrosion protection for carbon steel filter housing) or stainless steel

Material of filter elements
Stainless steel 316
Material of internal partsStainless steel 304

Power supply
Electric or pneumatic:EPT
Electric: EU

Power supply




Drain valve



DP gauge

Position switch



Control box

















Inlet/outlet (mm) 100125 200 250300 350 400 500 600 700 800 900 


Flow rate(T/H)
 100100 200400 500 800 1000 150020003000 4000 5000 
 3Liquid speed(M/S) 3.54 2.26 1.771.7 1.96 2.312.212.12 1.96 2.17 2.21 2.18 


Motor power: KW
 0.55 0.550.55 0.55 0.55 0.75 0.75 0.75 1.1 1.1 1.1 1.1 
 5Drain drive power: KW 0.09 0.090.09 0.09 0.09 0.090.09 0.09 0.037 0.037 0.037 0.037 
 6Loss(Mpa) 0.02-0.04
 7Filter degree 80-3500um
 8DP(Mpa) 0.01-0.15


Back flushing time(S)
 10Motor rotating speed (R/MIN) 0.75
 11Operate auto or manual

Filter degree

 100 120 150 200 400 8001500 3000
 Mesh number 150 120 100 80 40 20


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