P47AA-1C Johnson Controls Pressure Control

Overview

The Johnson Controls P47AA-1C is a steam pressure limit control engineered for high limit, cutout, or operating control applications in steam heating systems. It safeguards boilers and equipment by opening the circuit on a pressure rise when it exceeds the set point, automatically resetting once the pressure returns to a safe level. It is compatible with steam, water, air, or noncombustible gases that do not harm iron or copper.

Features

• High contact force and long-life contact structure
• Automatic reset operation
• Easy-to-adjust single sight-set scales showing both cut-in and cutout settings
• Switch action that opens on pressure rise

Specifications

• Brand: Johnson Controls
• Model: P47AA-1C
• Switch Type: SPST
• Pressure Range: 0 to 15 psi
• Differential Range: 2 to 8 psi
• Maximum Overpressure: 50 psig
• Connection Size: 1/4 inch external NPT
• Electrical Rating: 16 A @ 120 VAC, 8 A @ 240 VAC

Applications

Designed primarily as a high-limit or operating pressure controller on low-pressure steam boilers and heating systems. It is also suitable for various commercial and light industrial HVAC applications requiring automatic pressure protection for compatible fluids and gases.