Product structure

Principle descriptions

    The water flows through the screen and the particles are retained on the inside of the screen of the filter element. The filtered water then flows out through the outlet.

    When the particles accumulated to a certain number and the pressure differential increases to the pre-determined level, the flushing cycle starts. 

It include two steps: First, the automatic drain valve opens on the drainage outlet. Then, electronic motor drives the cleaning brushes which are inside the screen, the solids are expelled through the drain valve.

    Filters continue to supply filtered water even during the flushing cycle.The whole working system is controlled by a smart box which has several control modes: pressure differential, time, manual and PLC.

DLD series automatic have much advantages:wide filtration range,short flushing time,low water consumption,low pressure loss etc.

Technical parameters

Product selecting

When you are choosing automatic screen filters, please consider the following parameters:

   1. Flow capacity( Pipe diameter)

   2. Filtration range

   3. Shell materai

   4.  Pipeline pressure 

   5. Chemical properties of the filter medium 

   6. Suspended solids(SS) concentration of filter medium 

Filtration range table                                                    

The size chart 

                                          FL series self-cleaning filter specification data table

                                                 Loss of pressure table 

Installation and connection 

please keep the drain valve’s outlet direction horizontal position or down position to ensure the sewage is discharged completely.

Installing form A

  Installing form B

More filters in parallel are required as follow.

 Application pictures

1. Dawning Environmental Protection Technology Co., LTD. was founded in 2002 with a registered capital of 10 million, which is a emerging technology company specialized in environmental water treatment. The main products include water filter,water descaling antiscale and water heating equipmenets etc series. 

2.Our products have been already widely applied in the industrial and civil construction, steel, electric power, petrochemical,metallurgical, pharmaceutical, paper making, cars, hotels, municipal and other major industries.

3. Our factory covers an area of 13000 square which is domestic largest water filter production base.

3. We have a few professional engineers with over ten years experience in water filtration technology.