"SAF"
automatic filters
for flow rates up to 400 m³/h
 
The SAF filter series are sophisticated yet easy to operate automatic filters, with a self cleaning mechanism driven by an electric motor.
These Amiad automatic- self-cleaning electric filters are suitable for more applications than ever, and were designed to work with various types of screens.
SAF1500 Features
  • for high flow rates - up to 400 m³/h
  • large filter area - 1500, 3000, 4500 and 6000 cm²
  • minimum water waste during flushing - less than 1%
  • filtration range - from 500 to 10 micron
  • two cleaning methods - brushes or scanner
  • flushing - according to pressure differential and/or according to time. Option for continuous flushing. Minimum water wasted during flushing procedure. No interruption of flow downstream.
  • flexibility of control options - electronically monitored cleaning cycle
  • wide range of applications - water supply systems, cooling water, process water, effluent water
  • ideal for prefiltration of membrane systems
SAF3000
SAF4500
SAF6000
 
Typical applications Examples (click to view photo)
  • prefiltration of drinking water treatment
  • cooling water in high buildings and industry
  • protection against Zebra mussel infestation
  • polishing effluent water in paper mills
  • filtration for drip irrigation
  • municipal drinking water supply
  • supply water for various industries
  • filtering surface water for citrus groves
  • golf courses irrigation
  • prefiltration for ultrafiltration and reverse osmosis
  • sea water filtration
Technical specifications  
General
Filter Type
SAF-1500
SAF-3000
SAF-4500
SAF-6000
.
Maximum flow rate* (m³/h)
80
150
250
400
 Consult Filtermat for optimum flow, depending on filtration degree & water quality
Minimum working pressure (bar)
1,5
1,5
1,5
2
 Lower if pressure is increased for flushing
Maximum working pressure (bar)
10
10
10
10
 16 bar upon request
Filter area (cm²)
1500
3000
4500
6000
 .
Maximim working temperature
50°C
50°C
60°C
60°C
 95°C upon request
Filter housing diameter (mm)
250
250
250
350
 .
Inlet/outlet diameter (mm)
50,80,100
80,100,150
100,150,200
150,200,250
 Flange standards as per request
* Maximum flow can vary, based on dirt load and micron rating
 
Flushing data
Filter Type
SAF-1500
SAF-3000
SAF-4500
SAF-6000
.
Exhaust valve
50 mm
50 mm
50 mm
50 mm
.
Flushing water per cycle
25 litre
64 litre
83 litre
280 litre
at 2 bar
Minimum flow for flushing
6 m³/h
11 m³/h
15 m³/h
25 m³/h
at 2 bar
Flushing cycle time*
15 sec
20 sec
20 sec
40 sec
.
* Consult Filtermat for specifications
 
Control and Electricity
Control method
Automatic cleaning cycle, PLC monitored, NEMA 4 enclosure. UL or CUL available.
Control voltage
24VAC (12V upon request or VDC upon request)
Electric motor
Brushes : 1,5 Hp 18 Output R.P.M.
Scanner : 0,25 and 0,33 Hp 14 Output R.P.M.
Rated operation voltage
3 phase, 380V 50Hz, or 220/240V 50 Hz
Other voltages available upon request
Current consumption Brushes : 4,0 Amp.
Scanner : 1,5 Amp. (DC option 16 Amp.)
 
Construction materials*
Filter housing and lid
Epoxy coated Carbon steel 37-2
(Stainless steel 316 available upon request)
Filter screens
Stainless steel 316 (perforated, Wedgewire of Weavewire)
Cleaning mechanism
Brushes : Stainless steel 316, PVC
Scanner : Stainless steel, POM
Exhaust valve
Epoxy coated cast iron
Seals Natural rubber, FEP (special seal metarial upon request)
Control Aluminium, Brass, Stainless steel
* Consult Filtermat for specifications
 
Screen types
Perforated cylinder
Wedgewire screen
Weavewire screen
 
Filtration degrees
micron 500 300 200 130 100 80 50 25 10
mm 0,5 0,3 0,2 0,13 0,1 0,08 0,05 0,02 0,01
mesh 30 50 75 120 155 200 300 450 600
 
How the SAF filters work
 
Operation principle
The water enters through the inlet pipe into the coarse screen from outside in, and through the fine screen from inside out. The Filtration Cake accumulates on the fine screen surface and causes head loss to develop. The coarse screen is designed to protect the cleaning mechanism from large particles.
 
Self-cleaning process
The SAF filter starts the self cleaning process when the pressure differential across the screen reaches a pre-set value or a predeterminated lapse of time.
Cleaning of the filter elements is carried out by the suction scanner which rotates in a spiral movement while removing the filtration cake from the screen and expels it out through the exhaust valve, during the self-cleaning process, which takes approximately 40 seconds, filtered water continues to flow downstream.
 
Control-system

Two types of control boards are available for the SAF filter, PLC type and Relay type enable you to choose :

  • flushing according the pressure differential and/or time
  • continuous flushing
  • flushing counter
  • an alarm alternative in malfuction mode
 
 
Why should I choose to work with it ?
  • large filter, simple construction
  • reliable operation mechanism
  • ideal solution for filtration of low quality water
  • minimal flushing flow rate required
  • minimal quantities of flushing water - allows operator in continuous flushing mode without losing much water, or interrupting the water supply downstream
Suggested installations

Key to installation drawings :


Dimensions in mm

  1. SAF Filter
  2. Inlet butterfly valve
  3. Bypass valve
  4. Downstream valve
  5. Non-return check valve

* Minimum length for opening
 
Pressure loss graphs
Filtermat filters
Filtermat filters
Telephone +32-3-711.03.57 or +32-3-710.65.50
Fax +32-3-711.03.58 or +32-3-710.65.58
Address Winninglaan 17, B-9140 Temse (Belgium)
Email info@filtermat.be
Website www.filtermat.be