Description
The Johnson Controls A-4000-1048 is a coalescing oil removal filter engineered to protect pneumatic control systems and instrumentation from oil contamination in compressed air lines. By capturing and coalescing fine oil aerosols and mist before they reach downstream components, this filter helps extend equipment life, maintain accurate control performance, and reduce costly maintenance.
Key Features
- Coalescing filtration technology effectively removes oil aerosols and fine oil mist from compressed air
- 3/8″ NPT port connections for straightforward inline installation
- 10 SCFM flow capacity suitable for pneumatic control and instrumentation applications
- Protects downstream actuators, controllers, and pneumatic devices from oil-related damage
- Compact design for easy integration into existing air preparation assemblies
- Durable construction built to Johnson Controls’ exacting quality standards
Application
The A-4000-1048 is ideal for use in building automation and HVAC pneumatic control systems where clean, oil-free compressed air is essential. It is commonly installed as part of an air preparation train — alongside pressure regulators and particulate filters — to ensure reliable, long-term operation of pneumatic actuators, damper controls, and other sensitive instrumentation.
Specifications
- Brand: Johnson Controls
- Part Number: A-4000-1048
- Filter Type: Coalescing Oil Removal
- Port Size: 3/8″ NPT
- Flow Rate: 10 SCFM







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