Johnson Controls A-4000-141 Station

The Johnson Controls A-4000-141 is an industrial-grade single pressure reducing valve station engineered for pneumatic control systems requiring high-capacity air delivery. Delivering a maximum flow of 20 SCFM, this station integrates a four-way bypass valve for seamless maintenance without system interruption. The assembly features a dual-stage filtration process including coalescing filters and activated charcoal oil removing filters to ensure the removal of oil aerosols and vapors, maintaining air purity for downstream instrumentation. Constructed with high-durability copper tubing, the unit minimizes friction and facilitates higher flow rates while adhering strictly to fire codes for mechanical equipment rooms. Rated for a maximum input pressure of 150 PSIG and operational temperatures up to 120°F, the A-4000-141 provides a stable output pressure with minimal variation. This filter/reducing station is an essential component for contractors managing clean, dry, and regulated compressed air distribution in commercial HVAC environments.

• 20 SCFM Flow Capacity: Supports high-demand pneumatic systems with consistent air volume.
• Integrated 4-Way Bypass: Facilitates filter element replacement and valve servicing without shutting down the entire air supply.
• Dual-Stage Filtration: Coalescing and activated charcoal filters work in tandem to eliminate oil carryover and contaminants.
• Copper Piped Construction: Superior durability and fire-code compliance compared to standard pneumatic tubing.
• Automatic Drain System: Coalescing filters include automatic drains to eject entrapped liquids and maintain optimal performance.

How do I know when to replace the filter elements on the A-4000-141?
Service should be performed if the differential pressure between the input and leaving gages reaches 15 PSI, if the leaving pressure falls below 50 PSIG, or as part of a standard annual maintenance schedule to ensure air quality remains within specification.

Can this station be used for remote pressure regulation?
Yes, the station is designed to provide filtered, high-pressure air to remote PRV stations, utilizing 3/8 in. O.D. compression fittings for local and remote distribution ports.

What are the installation requirements regarding air compressors?
The supply air must originate from a properly broken-in compressor with an oil aerosol output of less than 6 ppm and must pass through a functional air dryer before entering the A-4000-141 station.

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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.