Johnson Controls P70AB-12 Pressure Control

The Johnson Controls P70AB-12 is a professional-grade single pole low pressure control designed for precise pump-down control and low-pressure cut-out in commercial refrigeration and HVACR systems. This SPST pressure switch features Open-Low action, specifically engineered to break the circuit when the pressure drops below the setpoint. With a 12" Wc to 80 Psi range and a highly adjustable 5 Psi to 35 Psi differential, it provides technicians with the flexibility needed for various cooling applications. The P70AB-12 is the manufacturer-recommended direct replacement for P70AB-47 and P70AB-41, ensuring seamless integration into existing setups. It includes a 36" capillary with a 1/4" flare nut for reliable connectivity and is MICRO-SET optimized for use with R-12, R-22, R-134A, R-500, and R-502 refrigerants. Built for durability, the unit features an all-steel case and is rated for a 525 Psig maximum overpressure, making it a staple for maintaining system integrity in demanding environments.

• Direct Retrofit Compatibility: Serves as the official direct replacement for P70AB-47 and P70AB-41 models.
• Precision Tuning: Features a cutout knob adjustment and Sight-Set calibrated scale for visible, accurate pressure settings without removing the cover.
• Robust Construction: Housed in a heavy-duty NEMA 1 all-steel enclosure to protect internal components from mechanical damage in mechanical rooms.
• Versatile Media Support: Compatible with all non-corrosive refrigerants, including R-22 and R-134A, as well as air and water applications.
• Secure Connection: The 36-inch capillary allows for flexible mounting while the 1/4 inch flare nut ensures a leak-resistant seal.

Is the P70AB-12 compatible with modern HFC refrigerants?
Yes, while it is micro-set for legacy refrigerants like R-12 and R-502, it is fully compatible with R-134A and other non-corrosive HFCs used in modern commercial systems.

What is the difference between this and the P170 series?
The P70AB-12 uses a 1/4" flare nut on a capillary, whereas P170 models typically utilize a direct 1/4" male flare connector, though their internal switching mechanisms are functionally similar.

Can this be used for high-side protection?
No, this is an Open-Low control designed for the low-pressure side of the system to prevent vacuum operation or manage pump-down cycles.

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.