Watek s.r.o. Water Treatment Equipment & Demineralizers

Technical selection of Watek s.r.o. water purification equipment: modular EWA 20 ultrapure water systems, DEMI reverse osmosis units, and continuous EDI demineralizers.

Ultrapure Water Systems EWA 20 and EWA 20 N Series

Automatic laboratory systems Watek EWA 20 and EWA 20 N produce ultrapure water with a resistivity of 18.2 MOhm*cm for sensitive analytical instruments. The modular unit integrates UV photo-oxidation for low TOC levels and 0.22 um sterile final microfiltration.

Product water resistivity reaches 18.2 MOhm*cm under continuous analytical operation
Special UV photo-oxidation lamp reduces total organic carbon TOC below 5 ppb
Sorption module IWA-OO with Organit resin and pre-filtration cartridge
Final microbial membrane filter with absolute 0.22 um retention rating

Laboratory and Industrial Water Demineralizers IWA 5 and IWA 40–100

Compact Watek IWA series demineralizers provide a steady supply of pure analytical water for laboratories, autoclaves, and plating lines. The integrated microprocessor unit tracks permeate conductivity and controls automated hygienic flushing routines.

Purification output ranging from 5 to 100 liters of demineralized water per hour
Permeate conductivity maintained within 0.055 to 0.1 uS/cm quality thresholds
Automated periodic hydraulic flush cycles prevent organic scaling and biofilm
Digital conductivity monitor with integrated automatic temperature adjustment

Single-Stage Reverse Osmosis Plants DEMI 100 – DEMI 1200

Industrial Watek DEMI reverse osmosis units produce high-grade demineralized water for boilers, cooling circuits, and chemical reactors. Premium thin-film composite membranes achieve up to 99% rejection of dissolved mineral salts and heavy metal ions.

Demineralized permeate flow rates from 100 to 1200 liters per hour in continuous operational mode
Operating feed pressure maintained between 1.0 and 1.6 MPa on membrane vessels
Mineral salt rejection efficiency above 98% via thin-film polyamide membranes
Integrated dry-run protection and automatic shut-off linked to storage levels

Two-Stage High-Purity Demineralization Plants DEMI 50/2 – DEMI 200/2

Two-stage reverse osmosis units Watek DEMI 50/2 to 200/2 utilize dual-pass permeate treatment to achieve ultra-low electrical conductivity. These high-purity systems serve demanding pharmaceutical formulations, cleanrooms, and semiconductor production facilities.

Double-pass permeate purification delivering between 50 and 200 liters per hour
Stable residual electrical conductivity output reliably below 1.0 uS/cm
Corrosion-resistant stainless steel SS316 high-pressure piping and fittings
Microprocessor monitoring both first and second stage permeate conductivity

Continuous Electrodeionisation Modules WATEK EDI Series

Continuous electrodeionisation units WATEK EDI combine ion-exchange membranes with an electric current field for deep demineralization without chemical regenerants. Modules ensure reliable high-purity water output with conductivity strictly below 0.1 uS/cm.

Unit capacity range spanning from 50 liters per hour up to 20 m3 per hour
Demineralized water conductivity output strictly below 0.1 uS/cm at 25 deg C
Elimination of hazardous acid and caustic regeneration chemicals and effluents
Continuous concentrate drainage and ongoing electrical resin self-regeneration

Ion-Exchange Demineralizers DEWA and Softening Plants SOWA

Industrial ion-exchange columns Watek DEWA and SOWA perform reliable softening and complete demineralization via cationic and anionic resins. Automatic volume-controlled multi-port valves coordinate timely resin brine regeneration and thorough rinse cycles.

High-pressure composite columns featuring corrosion-resistant internal liners
Resin regeneration triggered automatically by integrated electronic flow meters
Hardness mineral reduction down to strict technical levels of 0.01 meq/l
Automatic multi-port control valves managing service and counter-current rinse

Catalytic Deferrization Filters FIWA and Denitrification Units NIWA

Automatic pressure filters Watek FIWA and flow devices NIWA purify well water from dissolved iron, manganese, and harmful nitrates. Catalytic filter media oxidize impurities with automated backwash, protecting downstream reverse osmosis membranes from fouling.

Removes dissolved iron and manganese compounds without chlorine dosing
Protects downstream membrane vessels against mineral deposition and fouling
Automated counter-current backwash cycles keep catalytic media clean
Reduces nitrate ion concentrations to stringent drinking water standards

Air-Operated Diaphragm and Chemical Dosing Pumps for Aggressive Liquids

Industrial Watek pumping units include air-operated double diaphragm pumps and dosing systems for aggressive chemicals, acids, and coagulants. Wetted components crafted from PP, PVDF, and stainless steel ensure chemical resistance and zero process leaks.

Wetted bodies made of polypropylene PP, fluoropolymer PVDF, and SS316 steel
Durable double diaphragm membranes engineered from pure PTFE and Santoprene
Accurate reagent dosing modulation via proportional 4 to 20 mA analog signals
Intrinsically safe pneumatic drive with stall-free design and dry-run tolerance

Engineering Architecture of Watek Laboratory Water Systems

Czech engineering company WATEK s.r.o. has developed modular analytical water purification equipment for clinical and research laboratories since 1993.

The structural layout of the EWA 20 series combines preliminary permeate demineralization, deep sorption polishing through Organit resins, and organic decomposition via dual-wavelength ultraviolet emitters.

This multi-stage arrangement reliably produces analytical grade water with an ultimate electrical resistivity of 18.2 MOhm*cm at room temperature.

Automated recirculation through an integrated sanitizing loop prevents storage contamination and suppresses heterotrophic microbial growth during standby intervals.

Operational Advantages of DEMI Reverse Osmosis Plants

Industrial units within the DEMI series follow a modular architecture centered on spiral-wound reverse osmosis elements with composite polyamide barrier layers.

Depending on downstream water purity standards, units operate in single-pass or dual-pass arrangements with permeate flow capacities ranging from 50 to 1200 liters per hour.

The dual-pass process topology returns concentrate streams back to the primary intake, achieving overall feed recovery rates of 75 to 85 percent while lowering power demands.

Structural mounting frames, high-pressure pump manifolds, and pressure vessels are fabricated from corrosion-resistant SS316 stainless steel.

Continuous Electrodeionisation EDI for High Purity Applications

WATEK EDI continuous electrodeionisation modules provide an eco-friendly alternative to conventional chemically regenerated mixed-bed polishers.

Within EDI cell stacks, resin beads continuously regenerate via hydrogen and hydroxide ions produced by electrical water splitting under a constant direct-current field.

This technique eliminates on-site storage of aggressive acids and alkalis, avoids chemical neutralization steps, and guarantees ultra-low residual conductivity below 0.1 uS/cm.

Module throughput scales through parallel system integration up to 20 cubic meters per hour for demanding power and semiconductor plants.

Ion-Exchange Softening and Selective Filtration Technology

For industrial operations facing high mineral hardness, Watek manufactures DEWA and SOWA pressure vessels loaded with high-capacity sodium-form cationic resin.

Automated multi-port valves track cumulative fluid volume using integrated electronic flow meters, triggering backwash and concentrated brine injection routines.

Dedicated NIWA and FIWA equipment variants integrate catalytic oxidation media for effective reduction of dissolved iron and manganese ions.

This preliminary treatment step stops particulate fouling on delicate thin-film reverse osmosis membranes and extends downstream service intervals across the water purification loop.

Chemical Metering and Transfer Pumps for Aggressive Liquids

Watek purification stations integrate air-operated double diaphragm pumps and solenoid-driven dosing systems for safe delivery of anti-scalants, coagulants, and sanitizers.

Fluid-contacting components utilize chemically inert polypropylene, polyvinylidene fluoride PVDF, or pure polytetrafluoroethylene PTFE polymers.

Pneumatic drives operate with zero electrical sparking risks and withstand prolonged dry-running periods without overheating. Microprocessor-governed dosing heads support proportional feed rate regulation triggered by external flow meters or analog 4 to 20 mA signals within automated factory loops.

Quality Verification Standards and International Engineering Supply

Water treatment stations designed by Watek s.r.o. adhere to European engineering guidelines, low-voltage safety directives, and laboratory purity classifications under ISO 3696 and ASTM D1193.

Each assembled system undergoes hydrostatic pressure tests and automated control inspections before worldwide dispatch.

SpareX coordinates engineering selection of Watek equipment, specifications alignment, international freight handling, and customs compliance for manufacturing plants, analytical laboratories, and pharmaceutical companies globally.

Watek s.r.o. and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Watek s.r.o. and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.