HEF Iron Removal Filters

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Herco Wassertechnik GmbH

Neckar, Germany

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Low levels of iron and manganese are eliminated from filtered raw water using the HEF iron removal filter with Clack main control valve. It is an automatic one-filter system that uses raw water for time-controlled backwashing. During backwashing, downstream systems can be turned off using a floating contact. There is an optional skid variant with city water backwash.
Terms of usage:

There is less unfiltered water available for backwashing.
With sizes 1C through 4C, there is momentarily no water available when the main control valve is switched.
A BP bypass valve must be installed if water is to be supplied constantly.
A service valve (BV) must be installed if only filtered water is to be delivered.
To guarantee adequate backwashing, it is also required to unpressurize the filtrate line.
The installation of an aeration and deaeration valve BEV is required if negative pressure can arise in the filter (for example, during operation prior to a pressure increase or RO).

                                                            Operating pressure
                                                            1.5 – 8.0 bar
                                                        
                                                            Pressure fluctuation
                                                            ± 0.5 bar
                                                        
                                                            Operating temperature
                                                            5 – 35 °C
                                                        
                                                            Controller
                                                            Clack
                                                        
                                                            Filter medium
                                                            ca. 0.8 mm (cleanable)
                                                        
                                                            Support medium
                                                            quartz gravel 1 - 2 mm
                                                        
                                                            Filter velocity
                                                            12 m/h
                                                        
                                                            Backwash velocity
                                                            35 m/h
                                                        
                                                            Backwash time
                                                            10 min

Utilization of HEF Iron Removal Filters

Low iron and manganese content removal to prevent deposits
Safeguarding downstream parts against faults, such as diaphragms or valves.

Advantages of HEF Iron Removal Filters

Robust, user-friendly controller with dependable, fully automated operation.
Easy and rapid upkeep.

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