Introduction Advantages of cooperating with Our service - our conditions Our standard central control valve

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1 Introduction Advantages of cooperating with Our service - our conditions Our standard central control valve Gravel-Filter Deferrisation Systems Pressure filter EKF, made of stainless steel (V4A) Pressureless filter type OKF, made of plastic (PP) and V4A Oxidation-air-compressor, oxidator Backwash device type RSL/DPR-EKF, pressure-cushion-regulation OKF controls: Level control, backwash control, complete control Level control, automatic backwash device type RSL/DPR-OKF Industrial gravel filter systems KFE (single) and KFD (double) Pressureless industrial gravel-filter systems type OKF-2500-PE and type OKFI Compact-Deferrisation Systems Dirt filtration type SFZ Compact-deferrisation type BM and type BM-AIR Compact-deferrisation / demanganesation type MG Compact-deferrisation type ES (increase of ph-value) Compact-deferrisation / softening type MEV-CR1 and type MEV -CR2 Double-tank deferrisation / softening type DEW-CR1 and type DEW-CR2 Removal of humic acid (yellow colour) type MWO Softening Systems Information on soft water Cabinet softening type KAWK-D and type KAWK Double-tank cabinet softening system type KAP Single softening system type MWK-D and type MWK Hot-water softening type HMZK Double-tank softening system type DWK and type DWK-1/-2/-3 Industrial double-tank softening system type DWKI Automatic hardness-control device Information on DVGW-certification mark for water treatment systems Nitrate-Reduction Systems Information on nitrate Cabinet nitrate-reduction system type KAWN Single nitrate-reduction system type MWK Double-tank nitrate-reduction systems type DWN and type DWN-1/-2 Dosing Systems/Disinfection Compact-proportional system type NG5R and type NG10R Container-proportional dosing system type BD Dosing chemicals Information on UV-Oxidation UV-disinfection type UV11 UV60 Ultra-filtration filter candles type INDUWA Fresh Reverse Osmosis/Full Desalination Information on reverse osmosis Small-osmosis system type RO-5T50 Compact system type ROC, 100 l/h Full-desalination system type VEM (heater filling) Reverse-osmosis system type ROW l/h (wall system) Reverse-osmosis system type RO l/h (standing system) Reverse-osmosis system type RO l/h (standing system) Extras Backwash protection filter 1 2 type RF Plastic protection filter for 9 ¾ and 20 filter candles Connection/blending mountings, connecting hoses Membrane-pressure-container, pressure container Measuring instruments

2 Stainless Steel Model: EKF Single system, with manual backwash For the removal of iron, manganese and if necessary - aonium from raw/well water via addition of air. For average to high water demand, e.g. for multiple households, agricultural holdings, coercial enterprises, etc. Stainless steel container (V4A), cylindrical height 1250, with fill and drain opening ( 180, inside) and all necessary connections Water inlet pipe and waste water drainpipe made of PVC Nozzle star made of PP-plastic for the intake of filtrated water before the filter outlet Filling of the container with supporting gravel layer and filter material as required (sacks à 25 kg) Automatic aerator valve and vent valve made of high-quality plastic Operating pressure: max. 6 bar Environmental temperature: max. 40 C Water temperature: max. 40 C Connection filtrate drain (bottom): 2 sleeve, for EKF 900: 3 Connection aerator/deaerator: 1 sleeve, top Manometer, sampling: 2 x ½ sleeve (in casing) Extras, also available for retrofitting: Oxidation-air-compressor Oxidiser for intensive air mixing Automatic pressure-cushion-regulation for water boiler Automatic backwash with and without pressure-cushion-regulation Different diameters and casing heights Nozzle floor Choice of connections Special designs Filter material for exchange or supplement in the price list. System Type: INDUWA- Image: EKF-500 EKF- 400 EKF- 500 EKF- 600 EKF- 650 EKF- 800 EKF- 900 Content of Container Liter ca Flow (max.)* m 3 /h 1,5 2,5 3,6 4,0 6,5 8,0 Intake / Waste Water (lateral) Sleeve 1 ½ Supporting Gravel Layer, ca. kg Filtration Gravel Layer, ca. kg Container System Height (total) Min. Pressure Boiler Size Liter System Weight (dry) ca. kg Item Number: * Depending on the amount of iron and manganese in the raw water, individual interpretations are necessary.

3 Pressureless Gravel Filter Type: OKF Single system, with hygienic encapsulated spray room, with manual backwash For the removal of iron, manganese, aonium and odour from raw/well water via intensive forced ventilation of the spray room. For average to high water demand, e.g. for multiple households, agricultural holdings, coercial enterprises, etc. Corrosion-resistant filter container made of PP-plastic, completely enclosed, top cover partly removable for the purpose of filling/inspection, with drain opening DN 250 and all necessary connections, filtrate suction optionally on the left or on the right Water-intake sleeve with integrated spiral nozzle for water distribution Slot-in pipe ventilator for cross-/counter-flow-ventilation of the water (extras) Level switch with contactor 20 A in casing, for well pump control (extras) Integrated waste water spillway with drain connection for waste water discharge Integrated nozzle star for the intake and discharge of filtrated water Filling of the container with supporting gravel layer and filter material as required (sacks à 25 kg) Raw water connection: Rp 1 ½ inside Waste water connection: HT-tube NW 100 Connection aerator/air vent: HT-tube NW 100 Environmental temperature: max. 30 C Water temperature: max. 30 C Slot-in pipe ventilator: 230 V, 50 Hz, 15 W Extras, also available for retrofitting: Automatic backwash with and without pressure-cushion-regulation Automatic pressure-cushion-regulation for water boiler Dry-run protection for intermediate pump Model made of PE-plastic, black: UV- and frost-resistant. Double-tank systems, parallel or in sequence Different diameters and cover heights Nozzle floor Choice of connections Special designs Filter material separately in the price list. Image: OKF-600 OKF- System Type: INDUWA- 400 OKF-500 OKF-600 OKF-700 OKF-800 OKF-900 Content of Container Liter, ca Flow (max.)* m 3 /h 1,5 2,4 3,6 5,0 6,5 8,0 Pure Water Connection Zoll i. 1 ½ 1 ½ 1 ½ 1 ½ 1 ½ 2 ½ Supporting Gravel Layer, ca. kg Filtration Gravel Layer, ca. kg Container System Height (total) Min. Water Boiler Size Liter System Weight (dry) ca. kg Item Number * Depending on the amount of iron/manganese in the raw water, individual interpretations are necessary.

4 Pressureless Stainless Steel Gravel F. Single system, with hygienic encapsulated spray room, with manual backwash For the removal of iron, manganese, aonium and odour from raw/well water via intensive forced ventilation of the spray room. For average to high water demand, e.g. for multiple households, agricultural holdings, industrial businesses etc. Corrosion-resistant container made of stainless steel , completely closed, top cover partly removable for filling/inspection, with maintenance opening and all necessary connections Water-intake sleeve with integrated spiral nozzle for water distribution Slot-in pipe ventilator for ventilation in cross/counter flow of the water (extras) Level switch with contactor 20 A in a case, for well pump control (extras) Integrated rinse water spillway with drain connection for waste-water eduction Integrated nozzle star/nozzle floor for the intake and eduction of filtrated water Filling of the container with supporting gravel layer and filter material according to demand (sacks à 25 kg) Filtrate suction optionally on the left or on the right Cylindrical height: 2000 Raw water connection: sleeve 1 ¼ Waste water connection: tube 108 Maintenance opening: 250 Environmental temperature: max. 50 C Water temperature: max. 50 C Slot-in pipe ventilator: 230 V, 50 Hz, 11 or 15 W Extras, also available for retrofitting: Automatic backwash with and without pressure-cushion-regulation Automatic pressure-cushion-regulation for water boiler Dry-run protection for intermediate pump Double-tank systems, parallel or in sequence Different diameters and cover heights Nozzle floor made of PE, with filtration nozzles (available for retrofitting) Choice of connections (e.g. flange connection) Special designs Filter material for exchange or supplement available in the price list. Image. OKF-VA-800 Type: INDUWA OKF-VA Container Content, ca. Liter Flow, max.* m 3 /h 5,0 6,5 8,0 10,0 Pure Water Connection Sleeve 2 ½ 2 ½ 2 ½ 3 Air Inlet / Vent Tube 108 Tube 108 Tube 108 Tube 160 Container x System Height (total) 700 x x x x 2200 Min. Boiler Volume * Liter Supporting Gravel Layer, ca. kg Filtration Gravel Layer, ca. *1 / *2 kg 775/ / / /1450 Number of Nozzle Arms Piece Item Number: Container with Star Nozzle * Item Number: Option with Nozzle Floor * * Depending on the amount of iron and manganese in the raw water, individual interpretations are necessary.

5 Oxidation-Air Small Compressor For the compression of ambient air for water ventilation and pressure-cushion-regulation in closed gravel-filter-deferrisation-systems, e.g. Type EKF. Compressor characteristics: Oil-free compression Maintenance-free Fit for long-term service lasting several thousand hours, around the clock Delivery quantity: 32 standard liters/min at atmospheric pressure 14 standard liters at 5 bar Nominal pressure: 7 bar Sound pressure level: 57 db (A) Duty cycle: 100 % fit for permanent service at 7 bar and an environmental temperature of C Dimensions: 255 x 170 x 180 Weight: ca. 7,0 kg Motor characteristics: Power supply: 400 V, 50 Hz Motor performance: 295 W Motor protection class: IP 54 Speeds: 1410 U/min Item-Nr: Power supply: 230 V, 50 Hz Engine power: 310 W Item Number: Image: 400V-Model Extras within scope of delivery: 1 mounting bracket made of VA, for wall mounting 2 check valves made of brass ¼ 1 tube double nipple ¼, (galvanized) 1 PA pressure hose, 2 m 2 hose-connection-piece made of brass 4 Anti-vibration-mounts 1 compressor silencer 1 magnetic start-up-relief-valve 230 V 50 Hz (solely for 230 V aggregate) Larger aggregates and scavenging-air-fan for backwash support available on demand.

6 Oxidator Type: OX2 For the insertion and intensive mixing of oxidisation air which is necessary for pressure-gravelfilter-systems. Special features: Corrosion-resistant model made of PVC Filter candle easy to demountable in case of inspection/cleaning Inclusive ball tap for air blockage Finest air distribution in the water Connection - water: 2 x R 2 inside Connection - air: R ¼ inside System length (total) ca. 440 Installation arrangement Oxidator characteristics: Amount of water: max. 10 m 3 /h Amount of air: max. 0,6 Nm 3 /h Operating pressure: max. 10 bar Service temperature: 0-35 C To gravel filter Oxidator: Item-Nr Replacement-Sinter-Candle: Item-Nr.: Water intake Oxidation air Note: The push back of water into the compressed-air-line is preventable by installation of a fitting check valve (contained within scope of delivery of the small compressor or to-be-ordered separately). Warning: To ensure impeccable service, we advise to dismount, inspect and - if necessary replace or clean the air-distribution-candles with a diluted hydrochloric acid at least 1x a year.

7 Backwash Device Type RSL-EKF For the fully automated backwash of closed gravel-filter-systems, e.g. type EKF, which are installed between well pump and pressure boiler, and for the (available-for-retrofitting) automated regulation of the pressure cushion in the water boiler. Suitable for both retrofitting or third-party-installations. Consisting of: 1 backwash machine in plastic casing with integrated SIEMENS small-control-system for the prograing of backwash times, with hand-0-automatic-choice-switch 1 automatic backwash valve, connection 1 ½ made of glass fiber reinforced PA-plastic, with integrated magnetic pilot valve (directly controlled) with manual control and customizable flow limits 1* flap-float-valve made of plastic for installation in the boiler, with 3 m cable, connection ½ outside, max. 6 bar (*2 switches with pressure-cushion-regulation-option) Magnetic valve 230 V, 50 Hz. incl. check valve and installation material for automatic air backfeed in case of pressure shortage in the water boiler (pressure-cushion-regulation-option) Equipment of the well pump and intermediate pump with their respective motor protection switches and a pressure switch on the boiler has to take place on site. Characteristics of backwash device RSL / DPR for EKF: Freely prograable backwash times Increased operational safety and economical service thanks to consumption-dependent backwash Backwash in automatic or manual service Optimal utilisation of the available boiler volume for gravel-filter-backwash High switching capacity of the pump (20 A / 4 kw) Easy installation and initiation Alarm output (optional) Item-Nr. without pressure-cushion-regulation: Item-Nr. with pressure-cushion-regulation: Image. RSL-EKF with pressure-cushion-reg. Functional Description: In delivery status, a time-controlled forced backwash is pre-installed to take place once a week, at 2.00 in the night, to ensure system hygiene. Depending on the used amount of water (adjustable), an additional backwash takes place, also time-delayed at 2.00 at night, and if necessary even daily. If necessary, a backwash can also be initiated manually at all times. After initiation of the backwash, the pure water contained within the water boiler is flushed backwards through the opening of the automatic valve into the drain, until the laterally inserted flap switch in the boiler reacts and the backwash valve closes. Afterwards the well pump is turned on again as often as necessary until the turn-off pressure of the pressure switch is reached and the automatic valve opens again. The (changeable) number of these backwash runs is pre-selected at 4 per backwash, regardless of the required duration. Accordingly, initiation of the system is easy and requires a minimal amount of adjustments. For the option with pressure-cushion-regulation a second flap-switch is installed at the top of the boiler, which automatically supplements a deficient pressure-cushion via a magnetic air valve. If a INDUWA-Oxidation-air-compressor is installed, it takes over and ensures the necessary pressure-air-provision. Otherwise, a customary, oil-free compressor station is necessary.

8 Air-Cushion-Regulation For the automatic check and correction of the air cushion in pressure boilers of gravel-filtersystems. For the service and, in particular, for the proper backwash in gravel-filter-systems, a correct air cushion within the pressure boiler is essential, especially if an automatic backwash system is installed. Furthermore, unnecessary on/off-switching of the well pump is prevented, which goes easy on the pump. Correction of the air cushion is achieved by either a preexisting oxidation-air-compressor or an external (oil-free) compressor station. Consisting of: 1 terminal box made of plastic, for surface installation 110 x 110 x 65 1 flow switch for water-level assessment, for installation in the boiler 1 automatic magnetic valve ¼ made of brass 230 V, 50 Hz. 1 check valve ¼ made of brass 1 plug-in-t-piece for 8 pressure hose, for installation in the oxidation line 1 PE hose 8 x 6, ca. 3 m long, incl. 1 plug connection ¼ x 8 Characteristics of air-cushion-regulation Fully automated Air cushion continuously checked and corrected Always available for retrofitting, in all available systems Easy assembly Item-Nr.: Functional Description: The float valve is built into the pressure boiler from the outside, at appropriate height. (Sleeve exists in appropriate height on every standard boiler). During the filling of the pressure boiler, the float valve checks whether the filling level exceeds the target level. If the maximum filling level is exceeded during the automatic filling, a magnetic air valve is opened automatically, until the well pump is turned off again via the pressure switch. During this time, either the compressor for oxidation air or an external unit sends air into the boiler. This process is repeated until the float switch does not react anymore und thus enough air is contained within the boiler.

9 OKF-Level Control For the control of a well pump in pressureless gravel-filter-systems via a dynamic-pressuremembrane-switch. Functional description: The intermediate pump, which sucks the water from the pressureless filter container, is turned on and off by the pressure switch on the pressure container. As a result, the water level in the OKFcontainer decreases repeatedly and has to be refilled by the well pump. Since the well pump constantly delivers more fluid than the intermediate pump sucks off, the well pump has to be turned on and off again and again. This pump control takes place via a height-adjustable dynamic-pressure-tube, which is iersed into the container from above, in combination with a stationary membrane-pressure-switch (ca. 10cm hysteresis). The well pump is switched on and off directly by a contactor, with a maximum switching capacity of 20 A. The motor protection switch for the well pump is to be provided on side. Consisting of: 1 terminal box made of plastic, for surface installation 200 x 200 x V contactor, 3 turnkeys up to 500 V 1 automatic magnetic valve ¼ made of brass 230 V, 50 Hz 1 check valve ¼ made of brass 1 plug-in-t-piece for 8 pressure hose, for installation in the oxidation line 1 PE hose 8 x 6, ca. 3 m long, incl. 1 plug connection ¼ x 8 Characteristics of OKF-level control Fully automated Universally applicable for different systems and manufacturers High switching capacity Easily prograable Easy assembly Item-Nr.:

10 GRAVEL-FILTER-DEFERRISATION Backwash Device Type RSL-OKF For the fully automated backwash of pressureless gravel-filter-systems, e.g. type PKF, which are installed between well pump and pressure boiler, optionally with (available-for-retrofitting) automatic regulation of the pressure cushion in the water boiler. Suitable for both retrofitting or third-party systems. Consisting of: 1 backwash device in plastic casing, with integrated SIEMENS small-control-system for the prograing of backwash times, with hand-0-automatic-choice-switch 1 automatic backwash valve, connection 1 (optionally 1 ½ ) made of glass fibre reinforced PAplastic, with added magnetic pilot valve (directly controlled), with manual control and adjustable flow limits 1 * flap-float-switch made of plastic for installation in the boiler, with 3 m cable connection ½ outside, max. 6 bar (*2 switches for pressure-cushion-regulation-option) Magnetic valve 230 V, 50 Hz., incl. check valve and installation material for the automatic air backfeed in case of pressure deficiency in the water boiler (pressure-cushion-regulationoption) Equipment of the well pump and intermediate pump with their respective motor protection switches and a pressure switch on the boiler has to take place on site. Characteristics of backwash device RSL / DPR for OKF: Freely prograable backwash times Increased operational safety and economical service thanks to consumption-dependent backwash Backwash in automatic or manual service Optimal utilisation of the available boiler volume for gravel-filter-backwash High switching capacity of the pump (20 A / 4 KW) Easy installation and initiation Alarm output (optional) Item-Nr. without air-cushion-regulation: Item-Nr. with air-cushion-regulation: Item-Nr. option dry-run protection: Image. RSL-OKF with pressure-cushion-reg. Functional description: In delivery status, a time-controlled forced backwash is pre-installed to take place once a week, at 2.00 in the night, to ensure system hygiene. Depending on the used amount of water (adjustable), an additional backwash takes place, also time-delayed at 2.00 at night, and if necessary even daily. If necessary, a backwash can also be initiated manually at all times. After initiation of the backwash, the pure water contained within the water boiler is flushed backwards through the opening of the automatic valve into the drain, until the laterally inserted flap switch in the boiler reacts and the backwash valve closes. Afterwards the well pump is turned on again as often as necessary until the turn-off pressure of the pressure switch is reached and the automatic valve opens again. The (changeable) number of these backwash runs is pre-selected at 4 per backwash, regardless of the required duration. Accordingly, initiation of the system is easy and requires a minimal amount of adjustments. For the option with pressure-cushion-regulation, a second flap-switch is installed at the top of the boiler, which automatically supplements a deficient pressure-cushion via a magnetic air valve. If an INDUWA-Oxidation-air-compressor is installed, it takes over and ensures the necessary pressure-air-provision. Otherwise, a customary, oil-free compressor station is necessary.

11 GRAVEL-FILTER-DEFERRISATION OKF-Complete Control # For the fully automated control of pressureless gravel-filter-systems, e.g. type OKF, with level control of the well pump, with dry-run and motor protection of the intermediate pump, as well as a backwash device, optionally with (available-for-retrofitting) automatic regulation of the pressure cushion in the water boiler. Suitable for both retrofitting or for third-party-systems. Consisting of: 1 control box made of plastic, (dimensions: 300 x 450 x 145 ), with level control of well pump (max. 4 kw), with dry-run/motor protection of the intermediate pump (standard 1,6-2,5A), with integrated SIEMENS small-control-system for prograing of backwash times, with hand-0- automatic-choice-switch 1 automatic backwash valve, connection 1 (optionally 1 ½ ) made of glass fibre reinforced PAplastic, added magnetic pilot valve (directly controlled) with manual control and adjustable flow limits 1* flap-float-switch made of plastic for installation in the boiler, with 3 m cable connection ½ outside, max. 6 bar. (* 2 switches for pressure-cushion-regulation-option) 2 dip tubes made of PVC, with PG16 screw connection, for level control and dry-run protection Magnetic valve 230 V, 50 Hz., incl. check valve and installation material for the automatic air backfeed in case of pressure deficiency in the water boiler (pressure-cushion-regulation-option) Only motor-protection-switch and pressure switch for the well pump necessary on site Characteristics of OKF-complete control / DPR for OKF: Only one joint control box for all functions Easy initiation because of pre-prograing Increased operational safety and economical service thanks to consumption-dependent backwash Backwash in automatic or manual service Optimal utilisation of available boiler volume for gravel-filterbackwash High switching capacity of the pumps (20 A, 4 kw) Alarm output (optional) Item-Nr. valve 1, without pressure-cushion-regulation: Item-Nr. valve 1, with pressure-cushion-regulation: Item-Nr. valve 1 ½, without pressure-cushion-regulation: Item-Nr. valve 1 ½, with pressure-cushion-regulation: Img: 1 backwash valve/ press.-cush.-reg. Functional description of the backwash device: In delivery status, a time-controlled forced backwash is pre-installed to take place once a week, at 2.00 in the night, to ensure system hygiene. Depending on the used amount of water (adjustable), an additional backwash takes place, also time-delayed at 2.00 at night, and if necessary even daily. If necessary, a backwash can also be initiated manually at all times. After initiation of the backwash, the pure water contained within the water boiler is flushed backwards through the opening of the automatic valve into the drain, until the laterally inserted flap switch in the boiler reacts and the backwash valve closes. Afterwards the well pump is turned on again as often as necessary until the turn-off pressure of the pressure switch is reached and the automatic valve opens again. The (changeable) number of these backwash runs is pre-selected at 4 per back-wash, regardless of the required duration. Accordingly, initiation of the system is easy and requires a minimal amount of adjustments. For the option with pressure-cushion-regulation, a second flap-switch is installed at the top of the boiler, which automatically supplements a deficient pressure-cushion via a magnetic air valve. If an INDUWA-Oxidation-air-compressor is installed, it takes over and ensures the necessary pressure-air-provision. Otherwise, a customary, oil-free compressor station is necessary.

12 Stainless Steel Model: EKF-R Single system with automatic filter backwash with raw water. Installation behind a well pump even without downstream pressure boiler. For the removal of iron, manganese and - if necessary - aonium from raw/well water via addition of air. For average to high water demand, e.g. for multiple households, agricultural holdings or coercial enterprises, etc. Container made of stainless steel (V4A), cylindrical height 1250, with filling/emptying opening (Ø 180 inside) and all necessary connections Water inlet pipe and waste-water drain pipe made of PVC Star nozzle made of PP-plastic for uptake of the filtrated water before the filter drain Filling of the container with supporting gravel layer and filter material according to demand (sacks à 25 kg) Automatic aeration/ventilation valves made of high-quality plastic Oxidator for intensive air mixing Backwash device with plastic-membrane-valves, glass fibre reinforced for filter backwash Prograable control for the following cycles: service, backwash, infiltration Mostly pre-piped in PVC, with added control (230 V) and internal pneumatic tubing Compressed-air-supply for control air on site, ca. 5-6 bar Operating pressure: max. 6 bar Environmental temperature: max. 40 C Water temperature: max. 40 C Connection ventilation: 1 sleeve, top Manometer, sampling: 2 x ½ sleeve in casing Extras, also available for retrofitting: Oxidation-air-compressor, incl. control Pressure-cushion-regulation for water boiler Double-tank system, parallel or in sequence Other diameters and casing heights Nozzle floor Choice of connections Special models Filter material for exchange or supplement in the price list. Image. EKF-R-500 System Type: INDUWA- EKF-R-500 EKF-R-600 EKF-R-650 EKF-R-800 Container Content, ca. Liter Flow, max.* m 3 /h 2,5 3,6 4,0 6,5 Raw-Waste-Water-Filtrate-Connect. Sleeve D40 PVC D50 PVC D63 PVC D63 PVC Supporting Gravel Layer, ca. kg Filter Gravel Layer, ca. kg Container System Height (total) Necessary Pump Perform. at 1 bar m 3 /h 6 8, Item-Nr: * Depending on the load of iron and manganese in the raw water, individual interpretation is necessary.

13 Stainless Steel Model: EKF-DR Double system with automatic mutual backwash. Installation behind a well pump even without downstream pressure boiler. For the removal of iron, manganese and - if necessary - aonium from raw/well water via addition of air. For an average to high water demand for coercial and industrial applications. 2 containers made of stainless steel (V4A), cylindrical height 1250, with filling/emptying opening ( 180 inside) and all necessary connections Each container with one water inlet pipe and one waste-water drain pipe made of PVC 2 star nozzles made of PP-plastic for the uptake of filtrated water before the filter drain Filling of the container with supporting gravel layer and filter material according to demand (sacks à 25 kg) 2 automatic aeration/ventilation valves made of high-quality plastic Oxidator for intensive air mixing PVC-tube system, incl. fittings, holder made of VA, membrane-stop-valve made of PE/GFRP, pneumatically operated, NBR-sleeve, 3/2-way magnetic pilot valve with manual emergency operation, 230 V AC, manual ventilation and emptying valves Filter-backwash-control in a steel box, incl. Siemens logo-module and text-display Compressed-air-supply for control air on site, ca. 5-6 bar Operating pressure: max. 6 bar Environmental temperature: max. 40 C Water temperature: max. 40 C Connection ventilation: 1 sleeve, top Manometer, sampling: 2 x ½ sleeve Extras, also available for retrofitting: Oxidation-air-compressor, incl. control Pressure-cushion-regulation for water boiler Other diameters and casing heights Nozzle floor Pneumatically-operated butterfly valves Stainless-steel piping Choice of connections Special models Filter material for exchange or supplement in the price list. Image: EKF-DR 800 System Type: INDUWA EKF-DR Container Content (ca.) Liter 2 x x x x x x 1200 Flow (max.)* m 3 /h 5,0 7,0 8, Raw-Waste-Water-Filtrate-Connec. Sleeve D50 D50 D63 D63 D75 D75 Supporting Gravel Layer, ca. kg / Cont Filter Gravel Layer, ca. kg / Cont Pressure Container System Height Item-Nr: * Depending on the load of iron and manganese in the raw water, individual interpretation is necessary.

14 GRAVEL FILTER SYSTEM Type: KFE, pressure filter Fully automated single gravel-filter-system, for the deferrisation, demanganization and - if necessary - increase of the ph-value of service and drinking water Pressure container made of standard steel, on pedestals, with 2 manholes DN 500, 1 DN300 incl. seals and screws, overflow pipe with inside funnel, incl. flange connection, with integrated nozzle floor and PP-filter nozzles. Inside/outside sandblasted. Inside Inertol 49W thick, outside primed with 1 x Friazinc R. Tube system made of PVC with pneumatically controlled single flaps, double-acting, VA-discs, NBR-sleeve, GGG 40-casing, incl. Namur 5/2-way-valves (24V=), manual ventilation valve, sampling tube made of PP with manometers and drain cock, 1 aerator/ventilation valve, automated, mostly pre-piped on a VA-frame Filter filling made of quartz-gravel in necessary grain and quality Operating pressure: max. 6 bar Cylindrical height: 2500 Power supply: 230 / 400 V, 50 Hz Environmental temperature: max. 40 C Water temperature: max. 35 C Extras (see separate data sheets): Control cabinet with SPS-control and touch-panel Oxidation-air-compressor Oxidator for improved air introduction Scavenging blower Waste-water-pump Stainless-steel container and piping Higher pressure level Special models Choice of connections Image: KFE-1400 System Type: KFE Container System Height, ca Performance, max., m 3 /h Supporting Gravel Layer kg Filter Gravel Layer kg Filter Capacity at 500 g m 3 at 1g Fe Connection: Raw, Pure, and 50/50/ 65/65/ 65/65/ 80/80/ 80/80/ 100/100/ DN Waste Water Necessary Rinse Water m 3 /h Performance at 1,5 bar Item Number For the conception of the system, a raw water analysis and expert advice are necessary.

15 GRAVEL FILTER Type: KFD, double-tank pressure filter Fully automated double gravel-filter-system, parallel service for the deferrisation, demanganisation and - if necessary - increase of the ph-value of service and drinking water. Two pressure containers made of standard steel, on pedestals, with 2 manholes DN 500, 1 DN300 incl. seals and screws, overflow pipe with inside funnel, incl. flange connection, with integrated nozzle floor and PP-filter nozzles. Inside/outside sandblasted. Inside Inertol 49W thick, outside primed with 1 x Friazinc R. Tube system made of PVC with pneumatically controlled single flaps, double-acting, VA-discs, NBR-sleeve, GGG 40-casing, incl. Namur 5/2-way-valves (24V=), manual ventilation valve, sampling tube made of PP with manometers and drain cock, 2 aerator/ventilation valves (automated), mostly pre-piped on a VA-frame Filter filling made of quartz-gravel in necessary grain and quality Operating pressure: max. 6 bar Cylindrical height: 2500 Power supply: 230 / 400 V, 50 Hz Environmental temperature: max. 40 C Water temperature: max. 35 C Extras (see separate data sheets): Control cabinet with SPS-control and touch-panel Oxidation-air-compressor Oxidator for improved air introduction Scavenging blower Stainless-steel container and piping Higher pressure level Special models Choice of connections Image: KFD-1200 With optional positional indication System Type: KFD Container System Height Performance, max. m 3 /h 2 x 10 2 x 15 2 x 20 2 x 26 2 x 33 2 x 40 Supporting Gravel Layer, each kg Filter Gravel Layer, each kg Filter Capacity at 500 g m 3 at 1 g Fe Connection: Raw, Pure, Waste 65/65/ 80/80/ 100/ / / /125 DN Water / 125 / 125 / 150 / 150 Necessary Rinse Water m 3 /h Performance at 1,5 bar Item Number For the conception of the system, a raw water analysis and expert advice are necessary.

16 Pressureless Gravel F. Type: OKF-2500 Single system with hygienically encapsulated washing compartment, with manual backwash For the removal of iron, manganese and - if necessary - aonium from raw/well water via intensive forced ventilation of the washing compartment. For an average to high water demand, e.g. for agricultural holdings, coercial enterprises, etc. Corrosion-resistant container made of PE-plastic, completely closed, top cover partly removable in case of filling/inspection, with maintenance opening and all necessary connections Water-inlet sleeve with integrated spiral nozzle, for water distribution in the washing compartment Slot-in pipe ventilator for cross-/counter-flow-ventilation of the water (extra) Level control, incl. contactor 20 A in casing, for well pump control (extra) Integrated rinse water overflow with drain connection for rinse water discharge Integrated star nozzle/nozzle floor for intake and discharge of filtrated water Filling of the container with supporting gravel layer and filter material according to demand (sacks à 25kg) Filtrate-suction optionally on the left or the right Cylindrical height: 2500 Rinse water connection: HT-tube, NW 100 Environmental temperature: max. 30 C Water temperature: max. 30 C Slot-in pipe ventilator: 230 V, 50 Hz, 11 or 15 W Extras, also available for retrofitting: Backwash device with and without pressure-cushion-regulation Automatic pressure-cushion-regulation for the water boiler Dry-run protection for intermediate pump Double-tank systems, parallel or in sequence Other diameters and casing heights Nozzle floor Choice of connections Special models Filter material for exchange or supplement in the price list Image. OKF 1000 Type: INDUWA OKF Container Content, ca. Liter Flow, max.* m 3 /h 8,0 10,0 15,0 Maintenance Opening DN Intake / Drain Nozzle HT DN Raw Water Connection Sleeve 1 ¼ 2 2 Pure Water Connection Sleeve 2 ½ 3 3 Container x System Height (total) 900 x x x 2700 Min. Boiler Volume * Liter Supporting Gravel Layer, ca. Kg Filter Gravel Layer, ca. *1 / *2 kg 1750/ / /2700 Item Number with Star Nozzle * Item Number with Nozzle Floor * * Depending on the load of iron and manganese in the raw water, individual interpretation is necessary.

17 Type: OKFI, pressureless Manually operated single gravel-filter-system, for the removal of iron, manganese and if necessary aonium from raw/well water via intensive forced ventilation of the washing compartment. Corrosion-resistant filter container made of PP/PE-plastic for interior installation, completely closed, top press-in lid DN500 for filling/inspection, lateral opening DN400, overflow pipe with interior funnel, incl. flange connections, with integrated nozzle floor and PP-filter nozzles, with all necessary connections, incl. spiral nozzle for water distribution Slot-in pipe ventilator for cross/counter flow ventilation of the water Level control incl. contactor in casing, for well pump control Tube system made of PVC with manually operated single flaps, disc GG/Rilsan-coated, NBRsleeve, GGG 40-casing, tube system mostly pre-assembled with VA-holder Filter filling made of quartz gravel in necessary grain and quality Operating pressure: pressureless Cylindrical height: 3000 System height (total): 3200 Environmental temperature: max. 40 C Water temperature: max. 30 C Extras (see separate data sheets): switchboard with SPS-control and touch-panel Pneumatically operated butterfly valves Scavenging blower Suction and waste-water pumps Double-tank systems, parallel or in sequence Other diameters and casing heights Stainless-steel containers and piping Choice of connections (e.g. flange connections) Special models Filter material for exchange and supplement in the price list. Image. OKFI-1000 PP System Type: OKFI Container Performance (max.) * m 3 /h Supporting Gravel kg Filter Gravel kg Filter Capacity at 500 g m 3 at 1 g Fe Connection: Raw, Pure, and 50/65/ 65/80/ 65/80/ 80/100/ 80/100/ 100/125 DN Waste Water / 150 Necessary Rinse Water Perform. m 3 /h at 1,5 bar Item Number For the conception of the system, a raw water analysis and expert advice are necessary. * For a guaranteed system function, the filtrate has to be extracted via a pump.