Description
Johnson Controls P70LB-6 Dual Pressure Control Overview
The Johnson Controls P70LB-6 is a professional-grade dual pressure control engineered for reliable refrigeration and HVAC system protection. Combining low-side and high-side pressure monitoring in a single SPST switching device, this control automatically safeguards compressors and refrigerant circuits against unsafe operating pressures — eliminating the need for two separate controls and simplifying installation.
Key Features
- Dual pressure control monitors both low-side and high-side refrigerant pressures simultaneously
- SPST (Single-Pole, Single-Throw) switching configuration for straightforward circuit integration
- Low-side pressure range: 12 to 80 PSI
- High-side pressure range: 100 to 425 PSI
- Automatic reset — restores normal operation once pressures return to safe levels without manual intervention
- 36″ capillary tubing for flexible installation and remote sensing capability
- NEMA 1 enclosure for indoor use, protecting internal components from dust and light debris
- Includes adjustment knob for easy field calibration of setpoints
Applications
- Commercial refrigeration systems
- Air conditioning and heat pump compressor protection
- Chillers and condensing units requiring dual pressure safety cutout
- Any HVAC/R application requiring simultaneous low- and high-side pressure monitoring
Specifications
- Model: P70LB-6
- Brand: Johnson Controls
- Switch Type: SPST
- Low-Side Pressure Range: 12 to 80 PSI
- High-Side Pressure Range: 100 to 425 PSI
- Reset Type: Automatic
- Capillary Length: 36 inches
- Enclosure Rating: NEMA 1
- Includes: Adjustment Knob







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