Pressuretrol, Modulating, 5 psi to 150 psi


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Honeywell proportional pressuretrol controller with a range of 5-150 psi (adjustable 5-23 psi differential range), one potentiometer, and a 1/4″ NPT female connection to siphon loop. L91 proportioning pressuretrol controllers provide direct control of modulating motors or valves used on automatic burners or steam heating systems. L91B models have adjustable proportioning (throttling) range to allow selection of desired pressure control range.

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SKU: CON-PTROL-L91B1050 Category: Tags:

Modulating pressure operating control for regulation of liquid or air and other non-corrosive gases.


  • Use with steam, air, noncombustible gases, or other fluids non-corrosive to the brass or phos-bronze (300 psi models) bellows.
  • Do NOT use with combustible mediums or any medium chemically harmful to phos-bronze bellows (10-300 psi models) or brass bellows (all other pressure range models).


Manufacturer ID


Pressure Range

5 psi to 150 psi

Switch Operation


Max Pressure

225 psi

Pressure Differential

5 psi to 23 psi

Product Data

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