Johnson Controls A-4000-1049 Filter

The Johnson Controls A-4000-1049 is a high-capacity, 20 SCFM coalescing oil removal filter engineered specifically for critical pneumatic control system protection. This professional-grade filtration unit features 3/8" NPT inlet and outlet ports, providing the necessary flow rates for larger HVAC pneumatic air systems. By utilizing a high-efficiency coalescing filter element, the A-4000-1049 effectively captures oil aerosols and particulate matter down to 0.025 microns with an efficiency rating of 99.999%+, preventing contamination in downstream instrumentation and actuators. As a direct replacement for the legacy A-4000-149 model, it integrates seamlessly into existing A-4000 series pressure-reducing stations. The assembly includes an integrated automatic drain and a differential pressure indicator, allowing technicians to monitor system performance and prevent liquid accumulation without manual intervention. Designed to withstand a maximum input pressure of 150 PSIG and operating temperatures up to 120°F, this filter ensures clean oil-free air while reducing friction and meeting standard mechanical codes in equipment rooms.

Key Benefits

• High-Efficiency Filtration: Removes oil aerosols and vapors to provide clean oil-free air, protecting sensitive pneumatic controllers.
• Direct Retrofit Capability: Serves as the official replacement for the A-4000-149, ensuring perfect physical and technical compatibility.
• Automated Moisture Control: Features a built-in automatic drain to blow out entrapped liquids, reducing maintenance labor for service contractors.
• System Monitoring: Equipped with a differential pressure indicator to signal when the internal Pneumatic filter element requires replacement.
• Industrial Durability: Rated for a 20 SCFM nominal flow and 150 PSIG maximum input pressure to handle demanding commercial environments.

Common Questions

Is the A-4000-1049 compatible with older A-4000-149 installations?
Yes, the A-4000-1049 is the direct engineering replacement for the discontinued A-4000-149 filter, maintaining identical port sizes and flow characteristics for a swap-in installation.

When should the coalescing element inside this filter be replaced?
Service technicians should replace the internal filter element when the differential pressure indicator moves into the red zone or if the pressure drop across the filter exceeds 15 PSI. Regular inspection of the automatic drain is recommended during seasonal maintenance to prevent oil bypass.

Can this filter handle high-temperature compressed air lines?
The A-4000-1049 is rated for an upper temperature limit of 120°F (approx. 49°C). For systems where air temperatures exceed this limit, an aftercooler or additional air drying stage should be installed upstream to maintain filtration integrity.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.