Honeywell L4079B1066 Pressuretrol Limit Controller, 20–300 PSI, Manual Reset, SPST Break-on-Rise Switch, Stainless Steel Diaphragm

Honeywell L4079B1066 Pressuretrol Limit Controller, 20–300 PSI, Manual Reset, SPST Break-on-Rise Switch, Stainless Steel Diaphragm

Overview

The Honeywell L4079B1066 is a high-pressure limit controller designed for safe and reliable pressure monitoring in steam, air, noncombustible gases, and non-corrosive fluid systems. Featuring a stainless steel diaphragm and manual reset capability, this controller ensures system protection by breaking the electrical circuit on pressure rise.

Key Features

• Operating Pressure Range: 20 to 300 PSI with a maximum pressure rating of 350 PSI.

• Switch Action: Single Pole Single Throw (SPST) switch that breaks the circuit on pressure rise for safety shutdown.

• Manual Reset: Requires manual reset after activation to ensure intentional restart.

• Diaphragm Material: Durable stainless steel diaphragm suitable for use with steam, air, and non-corrosive gases and fluids.

• Mounting Options:

  • 1/4" internal NPT thread for diaphragm assembly mounting

  • Surface mount through back of case for flexible installation

• Electrical Ratings: Designed for 120Vac/240Vac applications.

• Application: Ideal for use as a pressure limit switch in commercial and industrial systems.

• Special Note: The L4079W model is intended for oil applications.

Technical Specifications

Applications

• Pressure limit control for steam, air, and noncombustible gas systems

• Safety shutdown in industrial boilers, compressors, and related equipment

• Systems requiring manual reset pressure limit protection

• Suitable for use with non-corrosive fluids compatible with stainless steel diaphragms