Description
The Johnson Controls P70AA-119 is a single-pole, single-throw (SPST) high pressure control engineered specifically for ammonia refrigeration systems. Designed with a close-on-rise/open-on-fall action, this control reliably protects refrigeration equipment by shutting down the system when high-side pressure exceeds safe operating limits.
Key Features
- Close High, Open Low (SPST) switching action for high-pressure safety cutout applications
- Pressure sensing range of 50 PSI to 300 PSI for precise system protection
- Adjustable differential range of 20 PSI to 100 PSI for flexible setpoint control
- 1/4″ Female NPT pressure connector for straightforward field installation
- Maximum overpressure rating of 400 PSIG for robust system safety
- Specifically rated and compatible for use with ammonia (R-717) refrigerant
- Single-pole switching design for simplified wiring and circuit integration
Specifications
- SKU: P70AA-119
- Brand: Johnson Controls
- Switch Type: SPST (Single Pole, Single Throw)
- Action: Close High, Open Low
- Pressure Range: 50 PSI to 300 PSI
- Differential Range: 20 PSI to 100 PSI
- Pressure Connection: 1/4″ Female NPT
- Maximum Overpressure: 400 PSIG
- Refrigerant Compatibility: Ammonia (R-717)
Application
The P70AA-119 is ideal for industrial and commercial ammonia refrigeration systems where reliable high-pressure cutout protection is essential. Its rugged construction and ammonia-compatible materials make it a trusted choice for cold storage facilities, food processing plants, and other industrial refrigeration applications. The wide adjustable differential range allows technicians to fine-tune the control to match specific system requirements, while the 400 PSIG maximum overpressure rating provides an added layer of protection against pressure spikes.
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