Ensure your compressed air remains ultra-dry and contaminant-free with the RTi DE401 Cartridge — a high-quality replacement desiccant element crafted for rugged performance and easy servicing. Built to support the reliable operation of RTi’s DE-series dryers (such as model “DE401-M04” and other DE-series configurations) that deliver up to 25 SCFM in cartridge-type deployment, this element utilizes activated alumina desiccant beads housed in a durable polycarbonate cartridge.

The polycarbonate cartridge design eliminates the need for loose desiccant beads that could migrate into your system, while providing tool-free cartridge replacement in under two minutes.  By installing the DE401 on schedule, you protect your spray equipment, pneumatic tools and paint finishes from moisture and water-related defects—ensuring better results and fewer maintenance disruptions.

Compatible Models & Use-Cases:
The DE401 Cartridge is engineered for use in the RTi DE-series desiccant dryers rated for up to ~25 SCFM (half-inch port versions) and other cartridge-type models with built-in dew-point indicators. For example:

• RTi DE401-M04 (½″ port, cartridge type, 25 SCFM)

• Other “DE” prefix models within the RTi/Reading Technologies product line (check your model label for compatibility with element part DE401)

Key Features & Benefits:

• High-efficiency activated alumina desiccant beads remove moisture and water vapour for ultra-dry compressed air.

• Self-contained polycarbonate cartridge eliminates loose desiccant migration and simplifies replacement.

• Tool-free, fast cartridge change (under 2 minutes) reduces downtime and maintenance effort.

• Supports up to ~25 SCFM systems in RTi DE-series dryers, making it ideal for automotive paint booths, refinishing shops and industrial air-prep applications.

• Maintains consistent performance and protects tools, spray guns and finishes from moisture-related issues.

Why Choose the RTi DE401 Cartridge?
In any compressed-air system, moisture is the silent threat — leading to corrosion, paint defects (such as fisheyes or blistering) and shortened component life. The RTi DE401 Cartridge helps you eliminate that threat by restoring the performance of your desiccant dryer and ensuring that the air feeding your spray guns and pneumatic tools remains reliably dry. By using the correct replacement element and maintaining your filtration schedule, you extend equipment life, reduce waste and achieve higher-quality finishes.