P70AB-2C Johnson Controls Pressure Control

Overview

The Johnson Controls P70AB-2C is a single pole single throw (SPST) low pressure control designed primarily for commercial refrigeration and air conditioning applications. It provides low-side pressure control, responding to system pressure changes via a pressure-actuated bellows to operate a snap-action electrical switch. It is an all-range control compatible with non-corrosive refrigerants such as R-12, R-22, R-134A, R-500, and R-520.

Features

• Rugged all-steel case and cover that protects internal components for long-lasting durability.
• Sight-Set calibrated pressure adjustment that displays a visible pressure scale, allowing full adjustments without removing the cover.
• Limited knob adjustment option that restricts the adjustment range to deter tampering and over-adjustment.
• SPST open-low switch action for reliable pump-down and cut-out control.

Specifications

• Pressure Range: 20 in. Hg to 100 psi
• Differential Pressure: 7 to 50 psi adjustable
• Switch Type: SPST (Open Low)
• Pressure Connection: 36-inch capillary with 1/4-inch flare nut
• Maximum Overpressure: 325 psig
• Enclosure Type: NEMA 1 standard

Applications

• Low pressure cut-out control
• Pump-down control
• Commercial refrigeration and air conditioning systems using common non-corrosive refrigerants