Filter particles and microorganisms / Without a storage tank
WATCH UF 2500® is a compact point-of-entry ultrafiltration system designed to reduce suspended particles, colloids and microorganisms from appropriately pretreated water.
The system uses a tubular ultrafiltration membrane with an absolute filtration rating of 20 nanometres, or 0.02 microns. Operating directly from suitable inlet pressure, WATCH UF 2500® provides a published flow of 2.2-2.7 m³/h at 25°C and 4 bar without requiring a treated-water storage tank or feed pump. It is available with manual or automatic backwashing and can be connected in parallel or series for larger commercial installations.
0.02-micron filtration / Compact, direct-flow performance
One UF platform.
Multiple water-filtration applications.
Suitable for drinking-water, process-water and pretreatment applications where membrane-compatible inlet water and adequate system pressure are available.
Drinking and Process Water
Reduction of suspended particles, colloids, bacteria and cyst-sized organisms.
Reverse-Osmosis Pre-Filtration
Helps reduce particulate and microbiological loading before compatible RO systems.
Hotels and Restaurants
Point-of-entry filtration for hospitality and food-service properties.
Holiday Homes and Campsites
Compact filtration for seasonal properties and camping facilities.
Remote and Temporary Operations
Potential use at remote worksites, mining operations, logging camps and temporary facilities.
Agriculture and Emergency Supply
Filtration for suitable seasonal agricultural activities and emergency-water installations with appropriate disinfection safeguards.
Four filtration functions / Engineered into one compact system
0.02-Micron Absolute Filtration (UF-20NM)
The tubular ultrafiltration membrane provides a published absolute rating of 20 nm for retaining particles, colloids and many microorganisms larger than the membrane pores.
Outside-to-Inside Filtration (OUT-IN)
Feed water passes from the outside of the tubular membrane toward the filtered-water side, retaining contaminants on the membrane surface.
No Storage Tank or Feed Pump (DIRECT-FLOW)
The system can operate directly from suitable line pressure without a separate treated-water storage tank or feed pump.
Manual or Automatic Cleaning (FLEX-BACKWASH)
WATCH UF 2500® is available with manual or automatic backwashing. Optional components support filtered-water backwashing, chemical cleaning, disinfection and bypass operation.
How WATCH UF 2500 ultrafiltration works
Ultrafiltration uses pressure to move water through a porous membrane while retaining suspended material and microorganisms according to their effective size.
- Size-Based Separation – The 0.02-micron absolute membrane barrier retains particles and organisms larger than the membrane’s rated pores while water and dissolved ions pass through.
- Colloid and Turbidity Control – Fine suspended solids and colloidal particles accumulate at the membrane surface instead of passing into the filtered-water stream.
- Microorganism Reduction – Log-reduction performance for bacteria, viruses and cysts depends on the test organism, protocol and operating conditions.
- Backwash and Cleaning Recovery – Periodic backwashing removes accumulated deposits. More intensive cleaning or disinfection may be required when normal backwashing no longer restores flow.
WATCH UF 2500® Specifications
Comprehensive performance parameters, log reductions, and available system configurations.
Published Performance Specifications
| Parameter | Published Value |
|---|---|
| Filtration rating | 20 nm / 0.02 µm absolute |
| Flow rate | 2.2–2.7 m³/h at 25°C and 4 bar |
| Operating temperature | 2–50°C |
| Operating pressure | 1–8 bar |
| Backwash rate | 0.7 m³/h (~12 L/min) |
| Dimensions & Weight | 23 cm diameter × 145 cm height | 16 kg |
| Connections | Main: DN 25 (1″) | Cleaning: DN 10 (3/8″) | Drain: DN 20 (3/4″) |
| Required prefiltration | 5 µm (1 µm recommended) |
| Chlorine limits | Max service: 1.0 ppm | Max cleaning: 200 ppm |
| Microorganism reduction | Bacteria: 4.4 log (99.996%) | Viruses: 2.4 log (99.6%) | Cysts: ~2.0 log (~99%) |
Available System Configurations
| Version | Article Number | Valve Type | Normal Flow | Backwash Flow | Connection |
|---|---|---|---|---|---|
| Automatic backwashing | UFA.025.842 | Tech-Series | 2.2 m³/h | 12 L/min | DN 25 / 1 inch |
| Manual backwashing | UFM.025.842 | Manual | 2.2 m³/h | 12 L/min | DN 25 / 1 inch |
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Frequently
Asked Questions
Essential information about membrane performance, installation, backwashing, disinfection and system limitations.
Contact SupportCalculate Your WATCH UF 2500® Configuration
Determine the required number of parallel WATCH UF 2500® modules based on your peak commercial flow rate.
Configuration Recommendation
Get an ultrafiltration solution
It all starts with your source-water analysis and required flow.
Send us your source-water quality, peak flow requirements (m³/h), pressure and application details (hotel, RO pre-filtration, campsite, industrial). Our specialists will help evaluate WATCH UF 2500® for your installation.
