Introduction
Thank you for choosing ALTHY products. The ALTHY U200PRO under-counter water purifier utilizes a Nano antibacterial carbon rod filter element. This system is designed to provide safe, healthy drinking water for your family by effectively filtering municipal water without reducing beneficial mineral content.
The U200PRO water purifier can effectively filter sediment, rust, 99% residual chlorine and chloride in the water. The carbon rod filter element is enhanced with MetSorb® Adsorbent Media (certified by NSF and patented), which effectively removes heavy metals such as cadmium, lead, chromium, and arsenic in water, with a removal rate of more than 90%.
Note: AL-U200Pro will not reduce the TDS value (ppm) of water. TDS value is not the basis for judging the quality of water.
Safety Precautions
Please read and adhere to all safety instructions to prevent product damage or accidents due to improper use.
Prohibition
- Do not use accessories not approved by ALTHY. Unauthorized accessories may void the warranty.
- Do not operate the product if it is malfunctioning. Immediately turn off the main water supply.
Warning
- Children and individuals with disabilities should use this product under adult supervision.
- In case of failure, immediately turn off the main water supply to the water pipe.
- All installation pipelines must comply with international safety standards.
Attention
- If purchasing additional accessories for installation, choose high-quality products.
- The applicable water source is municipal tap water.
- Applicable water pressure: 15-100 psi (100-689 kPa). If water pressure exceeds this range, install a pressure reducing valve.
- Applicable water temperature: 5℃~38℃ (41-100°F).
- This product is suitable for indoor installation only. Ensure a reliable floor drain is within 1.5 meters of the installation area to manage potential leaks.
- If the product is not used or left unattended for more than 3 days, cut off the water source to prevent damage or leaks.
Packing List
The ALTHY U200PRO package includes the following components:
- Water purifier (with 1 filter pre-packed in host)
- Additional filter cartridge (total 2 filters)
- Water purifier faucet
- Three-way valve (G1/2")
- Manual
- Faucet bracket
- Raw tape (Teflon tape)
- Water purifier connector (Direct connect adapter)
- PE pipe
- Self-tapping screws (x3)
- Expansion tubes (x3)
- Buckles for water purifier connector (x5)

Setup and Installation
The ALTHY U200PRO offers a flexible and convenient water supply form. The recommended installation method is under the sink. Installation typically takes about 5 minutes with the provided accessories and manual.
Installation Steps:
- Select Installation Location: Choose a suitable location under your kitchen sink. Ensure a floor drain is nearby (within 1.5 meters) for safety.
- Prepare Faucet: Assemble the water purifier faucet components as shown in the video. Attach the PE pipe to the faucet's connection point.
- Connect to Water Supply: Connect the three-way valve to your main kitchen sink cold water line. Then, connect the PE pipe from the faucet to the three-way valve.
- Connect to Filter Unit: Cut the PE pipe to the required length. Connect one end of the PE pipe to the 'IN' port of the filter unit and the other end to the 'OUT' port of the filter unit. Use the blue buckles to secure the connections.
- Install Faucet: Insert the assembled faucet into the pre-drilled hole in your sink or countertop. Secure it from underneath with the provided washers and nut.
- Final Connections: Connect the PE pipe from the filter unit's 'OUT' port to the faucet's inlet.
- Prepare Filter Cartridge: Before use, remove the filter bottle by turning it counterclockwise. Tear off the protective film from the new filter element and screw it into the base. Reinsert the filter element into the filter bottle and tighten clockwise by hand.
- Flush the System: Open the three-way valve to allow water flow. Turn on the water purifier faucet and flush the water for at least 10 minutes until the water runs clear. This removes any carbon fines and prepares the filter for use.


Operating Instructions
Once installed and flushed, your ALTHY U200PRO system is ready for use. The dedicated faucet provides filtered water for various needs.
Usage:
- Use the filtered water for direct drinking.
- Ideal for cooking, washing fruits, and vegetables.
- The faucet features an on/off knob for easy control of water flow.

Maintenance
Regular maintenance ensures optimal performance and longevity of your water filter system.
Filter Replacement Method:
The filter cartridge should be replaced every 6-12 months or after 8,000 gallons of filtered water, depending on your water quality and usage. Replacement takes approximately 1 minute.
- Close the three-way valve to shut off the water supply to the filter.
- Open the water purifier faucet to drain any remaining water from the system.
- Unscrew the filter bottle counterclockwise by hand.
- Remove the old filter element.
- Tear off the protective film of the new filter element.
- Screw the new filter element into the base.
- Place the filter element back into the filter bottle and tighten the filter bottle clockwise by hand.
- After installation, turn on the three-way valve. Open the faucet and flush with water for at least 5 minutes until the water becomes clear. The system is now ready for normal use.
General Care:
- The system housing is made of 304 food-grade stainless steel, which is durable and resistant to leaks, bumps, corrosion, and bursts. Clean the exterior with a soft, damp cloth as needed.
- The system does not generate any wastewater, making it an environmentally friendly choice.
Troubleshooting
If you encounter any issues with your ALTHY U200PRO water filter, refer to the table below for common problems and solutions.
| Symptoms | Possible Causes | Solutions |
|---|---|---|
| Clean water flow drops a lot | Filter clogged | Replace with a new filter element. |
| Water pressure is too low | Take measures to increase water pressure. | |
| Ball valve not fully open | Check and fully open the ball valve. | |
| Poor effluent quality | Filter failure | Replace with a new filter element. |
| Long-term inactivity (more than 3 days) | Turn on the faucet of the water purifier and let the water flow for at least 10 minutes. | |
| Source water quality is poor | Make sure the water source is municipal tap water. | |
| Water leakage | The PE pipe is not inserted in place | Install the PE pipe correctly and ensure it is fully seated. |
| Joint damage, PE pipe rupture, three-way ball valve damage | Replace the corresponding accessories, or contact ALTHY customer service. |
Specifications
| Feature | Detail |
|---|---|
| Product Name | ALTHY Under Sink Water Purifier |
| Model | AL-U200Pro |
| Water Treatment Type | Water Purifier |
| Use | Under Sink, Terminal Purification |
| Installation | Kitchen/Table |
| Function | Direct Drink |
| Water Quality Requirements | Municipal Water |
| Filtration Stages | 5-stage (PPF + KDF + ACF + AGF + MetSorb®) |
| Filter Material | Nano antibacterial carbon rod, Activated Carbon Filter Element |
| Housing Material | 304 Food Grade Stainless Steel |
| Maximum Flow Rate | 3.0 L/Minute (1.6 GPM) |
| Filter Life | 6-12 months or 8000 Gallons (depends on water quality) |
| Working Water Pressure | 15-100 psi / 100-689 kPa (0.1-0.4MPa) |
| Applicable Water Temperature | 5-38℃ (41-100°F) |
| Power Source | Non-electric |
| Certifications | CE, RoHS, Water Mark, NSF Standard 42 & 53 (for filtration elements) |
| Reduces | Chlorine, Lead, Fluorine, Heavy Metals (cadmium, arsenic, chromium, mercury), VOCs, Odors, Sediment, Rust, Bacteria, Insects. |
| TDS Reduction | No (retains natural minerals) |
| Wastewater Generated | None |




User Tips
- Initial Flushing: After installation or filter replacement, ensure you run enough water through the filter (at least 5-10 minutes) to avoid any initial taste from carbon fines.
- Leak Prevention: When installing pipe joints, especially those without gaskets, wrap them with a suitable number of turns of raw material tape (Teflon tape) to ensure proper sealing and prevent leaks, even with high-pressure systems.
- Ease of Installation: The system is designed for easy DIY installation. Follow the manual and video instructions carefully.
- Water Taste: While the filter significantly improves water quality, some users may notice a slight change in water taste. This is normal as impurities are removed.
Warranty and Support
The ALTHY U200PRO comes with a One Year Guarantee.
ALTHY is committed to providing world-class quality water filtration solutions. If you are not satisfied with your purchase or have any questions during the product lifecycle, please contact our trained water experts for assistance.
Important: Using accessories not approved by ALTHY may void your warranty.
For detailed information, please refer to the official user manual (PDF) available for download.