Description
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 Specification Details Operating Pressure Range 20 to 300 PSI Maximum Pressure 350 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 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
