Description
The Johnson Controls A-4000-139 is a Single Pressure Reducing Valve Station engineered for pneumatic control systems that demand clean, regulated, and consistently pressurized air. Designed for commercial and industrial HVAC applications, this all-in-one station simplifies installation and maintenance while delivering reliable air quality and pressure control in a single, compact assembly.
Overview
This pressure reducing valve station provides a complete air preparation solution for pneumatic control systems. With a rated flow capacity of 10 SCFM, it is well-suited for a wide range of building automation and pneumatic control applications. The integrated 4-way bypass valve allows technicians to service the station without interrupting system operation, minimizing downtime and improving system reliability.
Key Features
- Single pressure reducing valve station for pneumatic control systems
- 10 SCFM rated flow capacity for reliable air delivery
- Integrated 4-way bypass valve allows in-service maintenance without system shutdown
- Coalescing filter removes water droplets, aerosols, and particulates from the air supply
- Activated charcoal oil-removing filter eliminates oil vapors and contaminants for clean instrument air
- All-in-one station design simplifies installation and reduces field assembly time
- Ideal for commercial and industrial HVAC pneumatic control applications
Air Filtration System
The A-4000-139 includes two stages of filtration to ensure instrument-quality air reaches pneumatic controls and actuators. The coalescing filter captures liquid water, aerosols, and fine particulates, while the activated charcoal oil-removing filter adsorbs oil vapors and hydrocarbon contaminants. Together, these filters protect downstream pneumatic devices from damage and extend the service life of the entire control system.
4-Way Bypass Valve
The included 4-way bypass valve is a critical serviceability feature, enabling technicians to route air around the pressure reducing valve and filter assembly during maintenance or replacement. This design ensures uninterrupted pneumatic system operation during service intervals, reducing operational disruptions in occupied buildings.
Applications
- Pneumatic HVAC control systems in commercial buildings
- Building automation and energy management systems
- Industrial process control air preparation
- Pneumatic actuator and damper control supply air conditioning
Why Choose the Johnson Controls A-4000-139?
Johnson Controls is a globally recognized leader in building efficiency and HVAC controls. The A-4000-139 reflects their commitment to quality, reliability, and ease of use. By combining pressure regulation, multi-stage filtration, and bypass capability in a single station, this product reduces installation complexity and ensures long-term pneumatic system performance.
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