271-51 Johnson Controls Bracket

Overview

The Johnson Controls A-4000-121 is a replacement oil indicator cartridge designed for use with the A-4000-120 oil indicator and broader A-4000 series pneumatic oil removal stations. It provides precise visual monitoring of compressed air treatment systems by detecting aerosol-mist oil entrainment, ensuring clean, oil-free air to protect sensitive downstream HVAC controls.

Features

• Visual Readout: Features a calibrated plastic tube with a red oil-soluble dye that travels upward when oil is present.
• Precision Performance: Helps maintain system health by identifying aerosol contamination before it reaches critical pneumatic components.
• Direct OEM Fit: Specifically engineered as an authentic replacement component for exact fitment within the needle valve assembly.

Specifications

• Pressure Range: 10 to 125 PSIG (70 to 875 kPa)
• Minimum Detection Level: 0.01 PPM (0.012 mg/m³)
• Maximum Operating Temperature: 120°F (52°C)
• Measuring Flow Rate: 0.08 mL/s/kPa

Applications

• Designed for commercial and industrial pneumatic HVAC control systems.
• Used in compressed air treatment setups to monitor oil contamination levels.
• Ideal for high-performance stations emphasizing strict air purity controls.