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Instrument
Automatic Filters > VHF Model

VHF Model

Automatic Self Cleaning Filter - VHF Model

General Characteristics
The Body Material St-37 – AISI 316L
The Screen Material AISI 304L – PRGF
The Maximum Working Pressure 10 bar
The Minimum Output Pressure 2 bar
The Maximum Working Temperature 60o
The Back Washing Time Timing and Pressure Setup
Control System The Electronic and Hydraulic Control
Filtration Sensitivity 20 – 400 micron
The Paint Material Epoxi poliester
The filter body is St-37 or stainless-steel optionality
The filtering in pressured lines
High performance during the back washing
Extensive Filtering Surface
Easy-to assembly and fitler components, not required to change
100% back washing performance
The back washing time for 5-30 sec.
Working opportunity, not required additional energy
The minimum head and water loss
Technical Specifications
Code
Input/Output
A
B
L1
L
D
Flow Rate 
Filt. Surface 
Weight
 
inch
dn
(mm)
(mm)
(mm)
(mm)
(inch)
(m3/h)
(cm2)
(kg)
VHF 104
4
100
684
287
1425
869
10”
120
2634
80
VHF104S
4
100
784
287
1625
1069
10”
140
3951
85
VHF 105
5
125
784
287
1625
1069
10”
150
3951
87
VHF105S
5
125
884
287
1825
1269
10”
160
5268
120
VHF 106
6
150
884
287
1825
1269
10”
180
5268
124
Working Principle

Water, entered from input collector, passes to multistory screen filter inside the water (3). It is protected with a rough material with screen over of multiplex screen. The thin filter goes to output collector side (2). Particles, collected on multiplex screen, constitute a pollution layer over of the filter and a pressure difference in the outsite collector. This pressure difference open a back flushing unit washing decharge valve (9) in the value, designed previously (11) and a powerful back flushing flow consists from decharge pipet o atmosphere (10). This flow cleans the particle layyer, collected on filter by creating a vacuum from holes over of nozzle (5).

The dirty water, absorbed on multiplex filter, creates a volution by passing from water cleaning nozzle pipe (6) and hydraulic turbine (7). The pressure loss, consisted of turbine container (4) and plunger dreinage (9) constitutes an axial movement. The spiral headway, constituted by this axial and volution together, obtains the absorbing whole filter surface by vacuum nozzles.

When this process is done, the cleaning collector makes a second back flushing with warns with its warning switches and turns its first position. Transaction is completed.

During the back washing, the filtration process contiunes and after the back washing process, the filter stands by until next pressure difference signal.

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