
Honeywell L4079B1033 Controller
The Honeywell L4079B1033 Pressuretrol Limit Controller is a high-limit safety device engineered for precision monitoring in steam heating systems and applications involving air or non-combustible gases. Featuring a 2-15 PSI operating pressure range, this controller utilizes a durable stainless steel diaphragm to sense pressure changes and trigger a manual reset SPST switch that breaks on pressure rise. This manual reset functionality is critical for preventing automatic cycling in unsafe conditions, ensuring the technician inspects the system before resuming operation. The unit supports 120Vac and 240Vac electrical loads and is compatible with 1/4 inch NPT internal threads or surface mounting. As an exact replacement for the L4079B1033/U, it integrates seamlessly into existing low-pressure boiler manifolds. For contractors managing industrial pressure limit control, this Honeywell Pressuretrol provides the reliability required for high-stakes HVAC safety switch applications and corrosive fluid management.
Key Benefits for Contractors
- Manual Reset Safety: Prevents system restarts until a technician manually clears the fault, ensuring comprehensive diagnostic checks.
- Broad Media Compatibility: Designed for use with steam, air, non-combustible gases, and non-corrosive fluids.
- Versatile Mounting: Supports back-of-case surface mounting or direct line mounting via 1/4 inch NPT internal threads.
- High Precision Sensing: The stainless steel diaphragm offers long-term resistance to fatigue and consistent setpoint accuracy.
- Direct Replacement: Fully interchangeable with the Honeywell L4079B1033/U model for simplified inventory and installation.
Common Questions
Is the L4079B1033 suitable for high-pressure steam boilers?
No, this model is designed specifically for low-pressure applications with an operating range of 2 to 15 PSI. For high-pressure systems, a different Pressuretrol series must be used.
Does this controller automatically restart after a pressure drop?
No, this is a manual reset Honeywell controller. Once the pressure hits the high-limit setpoint and the switch breaks, it must be manually reset by a technician.
Can this be mounted in any orientation?
While it supports surface and pipe mounting, it is best practice to mount the unit vertically to prevent sediment buildup in the diaphragm chamber.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $305.29
-65%$305.29
$106.85Honeywell L4079B1033 Controller
The Honeywell L4079B1033 Pressuretrol Limit Controller is a high-limit safety device engineered for precision monitoring in steam heating systems and applications involving air or non-combustible gases. Featuring a 2-15 PSI operating pressure range, this controller utilizes a durable stainless steel diaphragm to sense pressure changes and trigger a manual reset SPST switch that breaks on pressure rise. This manual reset functionality is critical for preventing automatic cycling in unsafe conditions, ensuring the technician inspects the system before resuming operation. The unit supports 120Vac and 240Vac electrical loads and is compatible with 1/4 inch NPT internal threads or surface mounting. As an exact replacement for the L4079B1033/U, it integrates seamlessly into existing low-pressure boiler manifolds. For contractors managing industrial pressure limit control, this Honeywell Pressuretrol provides the reliability required for high-stakes HVAC safety switch applications and corrosive fluid management.
Key Benefits for Contractors
- Manual Reset Safety: Prevents system restarts until a technician manually clears the fault, ensuring comprehensive diagnostic checks.
- Broad Media Compatibility: Designed for use with steam, air, non-combustible gases, and non-corrosive fluids.
- Versatile Mounting: Supports back-of-case surface mounting or direct line mounting via 1/4 inch NPT internal threads.
- High Precision Sensing: The stainless steel diaphragm offers long-term resistance to fatigue and consistent setpoint accuracy.
- Direct Replacement: Fully interchangeable with the Honeywell L4079B1033/U model for simplified inventory and installation.
Common Questions
Is the L4079B1033 suitable for high-pressure steam boilers?
No, this model is designed specifically for low-pressure applications with an operating range of 2 to 15 PSI. For high-pressure systems, a different Pressuretrol series must be used.
Does this controller automatically restart after a pressure drop?
No, this is a manual reset Honeywell controller. Once the pressure hits the high-limit setpoint and the switch breaks, it must be manually reset by a technician.
Can this be mounted in any orientation?
While it supports surface and pipe mounting, it is best practice to mount the unit vertically to prevent sediment buildup in the diaphragm chamber.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Description
The Honeywell L4079B1033 Pressuretrol Limit Controller is a high-limit safety device engineered for precision monitoring in steam heating systems and applications involving air or non-combustible gases. Featuring a 2-15 PSI operating pressure range, this controller utilizes a durable stainless steel diaphragm to sense pressure changes and trigger a manual reset SPST switch that breaks on pressure rise. This manual reset functionality is critical for preventing automatic cycling in unsafe conditions, ensuring the technician inspects the system before resuming operation. The unit supports 120Vac and 240Vac electrical loads and is compatible with 1/4 inch NPT internal threads or surface mounting. As an exact replacement for the L4079B1033/U, it integrates seamlessly into existing low-pressure boiler manifolds. For contractors managing industrial pressure limit control, this Honeywell Pressuretrol provides the reliability required for high-stakes HVAC safety switch applications and corrosive fluid management.
Key Benefits for Contractors
- Manual Reset Safety: Prevents system restarts until a technician manually clears the fault, ensuring comprehensive diagnostic checks.
- Broad Media Compatibility: Designed for use with steam, air, non-combustible gases, and non-corrosive fluids.
- Versatile Mounting: Supports back-of-case surface mounting or direct line mounting via 1/4 inch NPT internal threads.
- High Precision Sensing: The stainless steel diaphragm offers long-term resistance to fatigue and consistent setpoint accuracy.
- Direct Replacement: Fully interchangeable with the Honeywell L4079B1033/U model for simplified inventory and installation.
Common Questions
Is the L4079B1033 suitable for high-pressure steam boilers?
No, this model is designed specifically for low-pressure applications with an operating range of 2 to 15 PSI. For high-pressure systems, a different Pressuretrol series must be used.
Does this controller automatically restart after a pressure drop?
No, this is a manual reset Honeywell controller. Once the pressure hits the high-limit setpoint and the switch breaks, it must be manually reset by a technician.
Can this be mounted in any orientation?
While it supports surface and pipe mounting, it is best practice to mount the unit vertically to prevent sediment buildup in the diaphragm chamber.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












