Johnson Controls P70EA-10 Pressure Control

The Johnson Controls P70EA-10 Pressure Control is a versatile SPDT low pressure switch engineered for commercial refrigeration and HVAC pump-down control. Designed for high reliability in the field, this "All Range" control is compatible with non-corrosive refrigerants including R-22, R-134A, R-404A, R-502, and R-507. It features a robust 1/4" male flare connector and is built to handle a 325 psig maximum overpressure without internal damage.

Technicians often specify the P70EA-10 Penn control for its precise 5 psi fixed differential and adjustable range from 20" Wc to 100 psi. The Single Pole Double Throw (SPDT) action provides flexibility for both standard cutout operation and the integration of external alarm systems or auxiliary control circuits. With its NEMA 1 enclosure and proven bellows design, this unit provides consistent performance in demanding environments where accurate low-side pressure monitoring is critical for compressor longevity.

• Universal Compatibility: Works with a broad spectrum of "All Range" refrigerants, reducing the need for multiple SKUs on your service truck.
• Precise Switching: Features a fixed 5 psi differential to prevent frequent cycling and ensure steady system operation.
• Simplified Installation: Standard 1/4" male flare pressure connection and clearly labeled terminals for fast field wiring.
• High Overpressure Rating: Safety-rated for up to 325 psig, providing a significant buffer during system surges.
• Multi-Circuit Capability: SPDT switch action allows for both equipment control and simultaneous signal output for diagnostic indicators.

What is the difference between SPST and SPDT in these controls?
While an SPST (Single Pole Single Throw) only breaks or makes a single circuit, this SPDT model provides a "changeover" action. This allows you to cut power to the compressor while simultaneously sending a signal to an alarm or indicator lamp when the low pressure setpoint is reached.

Can I use the P70EA-10 for ammonia applications?
No, the P70EA-10 is designed for non-corrosive refrigerants only. For ammonia systems, you must use the 316 stainless steel bellows models specifically rated for ammonia service.

Is the differential adjustable on this model?
This specific unit features a factory-fixed 5 psi differential. If your application requires a variable differential, you would need to look at the P70AB or MICRO-SET series controls.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.