Stainless Steel Cartridge Filter Housing with Multi Cartridge Elements

September 04, 2025

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 Industry
Trademark: PEIDE
Transport Package: Wooden Cases
Specification: Cartridge Filter Housing with Multi Cartridge Elements
Origin: China
Stainless Steel Cartridge Filter Housing with Multi Cartridge Elements



General

Contamination in process water can significantly reduce the lifespan of system components and negatively affect product quality. To protect your equipment and ensure smooth operations, a reliable filtration system is essential for removing solid particles from fluids. The automatic back-flushing filter has been widely used by power plants, district heating systems, sewage treatment facilities, and manufacturing companies due to its efficiency and dependability.



Structure

Stainless Steel Cartridge Filter Housing with Multi Cartridge Elements


Operation Principle

The fluid flows through the filter elements from the inside to the outside, where contaminants accumulate on the inner surface. As the contamination increases, the differential pressure between the clean and contaminated sides also rises.


Back-Flushing Process

1. A gear motor rotates the flushing arm beneath the filter elements, ensuring the removal of contaminants.
2. Contaminants are flushed out through the open back-flushing valve.
3. The pressure difference between the filtrate side and the back-flushing line pushes a small amount of filtrate back through the contaminated elements.
4. The flushing arm helps loosen and remove the collected particles into the back-flushing line.
5. Once the back-flushing time per element has passed, the valve closes, and the cycle continues until all elements are cleaned.


Backwash Trigger Conditions

- When the differential pressure exceeds a set threshold,
- Through an adjustable timer,
- By pressing the TEST button.


Advantages of the Design

The conical shape of the filter elements ensures consistent flow, minimizing pressure drop and maximizing cleaning efficiency. The robust design makes it ideal for retrofitting, allowing quick and cost-effective installation in both new and existing systems.

Pulse-Aided Back-Flushing

On models EPT and PT, the flushing arm remains under each filter element for only a few seconds, improving efficiency.

Flexible Configuration

The inlet, outlet, and back-flushing lines can be arranged in different positions, making integration into various system layouts easier.

Electromechanical Design

Easy installation with pre-connected PLC controller and pressure test pipes. Simply connect to an air source to start operation.

Customizable Parameters

Users can adjust the pressure drop and back-flushing time based on actual usage requirements.


Performance

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 quality Certified to ISO 9001

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

 Conical filter elements
Global Presence Worldwide 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



Costs

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


Maintenance  
 

Low maintenance costs

Easy to service

Guaranteed high quality filtrate

Low maintenance

Static seal between contaminated and clean side


Applications


Power Industry
• Conditioning of industrial water used to cool generators
• Filtration of sealing water to increase the service life of turbine shaft floating ring seals in hydroelectric power stations
 
Steel Industry
• Filtration of process water to protect nozzles and pumps in high-pressure descaling
• Water conditioning for cooling blast 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) for cooling purposes
 
Automotive Industry
• Filtration of coolant lubricants
• Filtration of washing fluids
• Protection of machine tools
 
Marine
• Pre-filtration for ballast water conditioning systems
 
Chemical Industry
• Cooling water filtration
• Wastewater 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 solutions for subsea environments
 
Water/Wastewater Conditioning
• Protective filter before membrane systems
• Conditioning of service water in sewage treatment plants
 
Mining
• 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

5T/H-7500T/H

Filter Degree

80-3500um

Operating Temperature

90 °C
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 Housing

Carbon steel (Corrosion protection for carbon steel filter housing) or stainless steel
Material of Filter Elements Stainless Steel 316
Material of Internal Parts Stainless Steel 304


Power supply
Electric or pneumatic:EPT
Electric: EU
 

Power Supply

EPT

EU
Motor EU EU

Drain Valve

PT

EU
DP Gauge EU EU

Position Switch

EU

EU

Control Box

EU

EU


How to Select Model

Stainless Steel Cartridge Filter Housing with Multi Cartridge Elements

 
NO.  Item.

 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
 1 Inlet/Outlet (DN)  100 125  200  250 300  350  400  500  600  700  800  900 

 2

 Flow Rate(T/H)  100 100  200 400  500  800  1000  1500 2000 3000  4000  5000 
 3 Liquid Speed(M/S)  3.54  2.26  1.77 1.7  1.96  2.31 2.21 2.12  1.96  2.17  2.21  2.18 

 4

 Motor Power(KW)  0.55  0.55 0.55  0.55  0.55  0.75  0.75  0.75  1.1  1.1  1.1  1.1 
 5 Drain Drive Power(KW)  0.09  0.09 0.09  0.09  0.09  0.09 0.09  0.09  0.037  0.037  0.037  0.037 
 6 Loss(Mpa)  0.02-0.04
 7 Filter Degree(um)  80-3500
 8 DP(Mpa)  0.01-0.15

 9

 Back Flushing Time (S)  0-180
 10 Motor Rotating Speed (R/MIN)  0.75
 11 Operate  Auto or Manual



Filter Degree
 
 um  100  120  150  200  400  800 1500  3000
 Mesh Number  150  120  100  80  40  20

10

  5



Loss Grid

Stainless Steel Cartridge Filter Housing with Multi Cartridge Elements




Installation


Vertical installation, foundation bolts fixed. Filters should not be considered as pipeline strength support. Pipeline diameter must be at least equal to the standard drain butterfly valve.
Supply compressed air: ensure air is clean, with pressure between 2bar and 8bar, air connection: G1, 4" ISO228

Stainless Steel Cartridge Filter Housing with Multi Cartridge Elements
 

We recommend using pre-treatment equipment before the automatic back-flushing filter to prevent damage from large particles.

Automatic Back-Flushing Filter Pre-Treating
 <500um 3mm
 >500um 10mm


Stainless Steel Cartridge Filter Housing with Multi Cartridge Elements


Spare Parts

Stainless Steel Cartridge Filter Housing with Multi Cartridge Elements








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