Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your Hydronix SWC-45-2050 String Wound Water Filter Cartridge. Please read these instructions carefully before use to ensure optimal performance and safety. This filter is designed for whole house, well, or commercial water filtration systems.
Product Overview
The Hydronix SWC-45-2050 is a 4.5" x 20" string wound water filter cartridge with a 50-micron filtration rating. It is constructed from pure 100% polypropylene string, offering high dirt holding capacity and chemical resistance. This filter is suitable for various applications, including residential and commercial settings, and is designed to fit most standard 4.5" x 20" filter housings.
Key Features:
- String Wound Technology: Provides effective 50-micron filtration.
- Durable Material: Made from 100% pure polypropylene string.
- High Capacity: Designed for superior dirt-holding capacity.
- Versatile Use: Suitable for both commercial and residential applications.
- Standard Size: Measures 4.5" x 20", compatible with common housings.
- Temperature Resistance: Withstands temperatures up to 165°F.
- Certified: Complies with FDA standards and NSF certified.

Image: The Hydronix SWC-45-2050 String Wound Water Filter Cartridge, a 4.5" x 20" white cylindrical filter.
Safety Information
- Always turn off the main water supply before installing or replacing the filter cartridge.
- Relieve water pressure in the system before opening the filter housing.
- Use appropriate tools and follow all local plumbing codes during installation.
- Ensure proper sealing to prevent leaks.
- Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.
- Keep the filter cartridge in its original packaging until ready for use to prevent contamination.
Setup (Installation)
This filter cartridge is designed for use in a compatible 4.5" x 20" whole house filter housing (not included). The following steps outline a general installation process:
- Turn Off Water Supply: Locate the main water shut-off valve for your home or facility and turn it off.
- Relieve Pressure: Open a nearby faucet to drain water from the pipes and relieve pressure in the system.
- Open Filter Housing: Using a filter wrench, carefully unscrew the sump (bottom portion) of the filter housing.
- Remove Old Cartridge: Remove the used filter cartridge and dispose of it properly.
- Clean Housing: Clean the inside of the filter housing sump with warm, soapy water and rinse thoroughly. Inspect the O-ring for any damage or wear; replace if necessary. Lubricate the O-ring with a silicone-based lubricant if needed.
- Insert New Cartridge: Remove the new Hydronix SWC-45-2050 filter cartridge from its packaging. Insert the new cartridge into the housing, ensuring it seats properly onto the center standpipe.
- Close Housing: Screw the sump back onto the filter head by hand until it is snug. Then, use the filter wrench to tighten it an additional 1/4 to 1/2 turn. Do not overtighten.
- Restore Water Supply: Slowly turn on the main water supply.
- Check for Leaks: Monitor the filter housing for any leaks. If leaks occur, turn off the water, relieve pressure, and re-tighten the housing.
- Flush System: Open a cold water faucet downstream from the filter for several minutes to flush out any air and fine particles from the new filter.

Image: A clear filter housing, illustrating where the filter cartridge would be placed during installation.
Operating Instructions
Once installed, the Hydronix SWC-45-2050 filter cartridge operates continuously as water flows through your system. It effectively removes sediment, dirt, rust, and other particulate matter from your water supply. No further user interaction is required during normal operation.
Maintenance
The filter cartridge should be replaced regularly to maintain optimal water quality and flow. The replacement frequency depends on the quality of your incoming water and the volume of water filtered.
- Replacement Schedule: It is generally recommended to replace the filter cartridge every 3 to 6 months, or sooner if you notice a significant drop in water pressure or a decrease in water quality.
- Signs of Clogging: Reduced water flow, discolored water, or a noticeable change in taste or odor (though this filter primarily addresses sediment) indicate that the filter may be clogged and requires replacement.
- Replacement Procedure: Follow the same steps as outlined in the "Setup (Installation)" section for replacing the cartridge.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Reduced Water Flow | Clogged filter cartridge. | Replace the filter cartridge. |
| Water Leaks from Housing | Improperly seated O-ring, damaged O-ring, or loose housing. | Turn off water, relieve pressure, inspect and re-seat/replace O-ring, tighten housing. |
| Poor Sediment Removal | Filter cartridge is exhausted or incorrect micron rating for application. | Replace the filter cartridge. Ensure the 50-micron rating is appropriate for your sediment type. Consider a finer micron filter if necessary. |
Specifications
| Attribute | Detail |
|---|---|
| Model Number | SWC-45-2050 |
| Brand | Hydronix |
| Filtration Rating | 50 Micron |
| Dimensions (D x W x H) | 4.5" x 4.5" x 20" |
| Material | Polypropylene (PP) |
| Item Weight | 3 Pounds |
| External Testing Certification | NSF |
| Maximum Operating Temperature | 165°F (73.9°C) |
| Unit Count | 1.0 Count |
| UPC | 693614032248 |
Warranty and Support
Specific warranty information for the Hydronix SWC-45-2050 filter cartridge is not provided in the product details. For warranty claims or technical support, please contact Hydronix directly or refer to the documentation provided with your filter housing or complete filtration system.