Description
The Johnson Controls P170LB-1 is a dual pressure control designed for refrigeration and air conditioning systems requiring reliable high- and low-side pressure monitoring in a single, compact device. Featuring SPST (Single-Pole, Single-Throw) switch action, this control provides dependable circuit switching based on system pressure conditions, helping protect compressors and refrigerant circuits from damaging over- or under-pressure events.
Low Pressure Side Specifications
- Pressure Range: 20″ Hg (vacuum) to 100 PSI
- Adjustable Differential: 7–50 PSI
High Pressure Side Specifications
- Pressure Range: 100 to 500 PSI
- Differential: 65 PSI (Non-Adjustable)
Connection & Switch Details
- Switch Action: SPST (Single-Pole, Single-Throw)
- Connection Type: 1/4″ External Flare Connector
- Low Cut Out: Limited K setting
Key Features & Benefits
- Dual pressure control monitors both high- and low-pressure sides simultaneously
- Wide low-side range from deep vacuum to 100 PSI for versatile refrigerant compatibility
- High-side range up to 500 PSI suits a broad range of refrigerants and system pressures
- Adjustable low-side differential (7–50 PSI) allows field customization to match system requirements
- Fixed 65 PSI high-side differential provides consistent, factory-set high-pressure protection
- 1/4″ external flare connection for straightforward field installation
- Compact, single-unit design reduces installation complexity versus separate high- and low-pressure controls
- Trusted Johnson Controls quality for long-term reliability in commercial and residential refrigeration applications
Typical Applications
- Commercial refrigeration systems
- Air conditioning compressor protection
- Heat pump systems requiring dual pressure safety cutouts
- OEM equipment requiring combined high/low pressure switching
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