Description
Honeywell L4079B1033 Pressuretrol Limit Controller, 2–15 PSI, Manual Reset, SPST Break-on-Rise Switch, Stainless Steel Diaphragm Overview The Honeywell L4079B1033 is a high-pressure limit controller designed to provide reliable safety control for steam, air, noncombustible gases, and non-corrosive fluids. It features a durable stainless steel diaphragm and a manual reset SPST switch that breaks the circuit on pressure rise to protect equipment from overpressure conditions. Key Features Operating Pressure Range: 2 to 15 PSI, with a maximum pressure rating of 25 PSI Switch Action: Single Pole Single Throw (SPST) switch that opens on pressure rise Manual Reset: Requires manual reset after activation for controlled restart Robust Diaphragm: Stainless steel diaphragm compatible with steam, air, noncombustible gases, and non-corrosive fluids Flexible Mounting Options: 1/4" NPT female internal thread for diaphragm assembly Surface mount option through the back of the case Electrical Compatibility: Operates on 120Vac/240Vac power supplies Oil Applications: L4079W model variant designed specifically for oil systems Technical Specifications Specification Details Operating Pressure Range 2 to 15 PSI Maximum Pressure 25 PSI Switch Type SPST, Break on Pressure Rise Reset Type Manual Reset Diaphragm Material Stainless Steel Mounting 1/4" NPT Internal Thread or Surface Mount Voltage Rating 120Vac / 240Vac Pressure Differential 2 to 6 PSI Applications Safety pressure limit control in steam, air, and noncombustible gas systems Protection of boilers, compressors, and related equipment Systems requiring manual reset to prevent automatic restart after a pressure fault Suitable for use with fluids non-corrosive to stainless steel diaphragms
