Honeywell Thermal Solutions FSG L91A1037 Pressure Controller

The Honeywell Thermal Solutions FSG L91A1037 Pressure Controller is a differential-type device designed for precise, modulating pressure control. With brass bellows and a 0 to 15 PSI operating range, it delivers dependable regulation for boilers, air handlers, and process equipment, while tolerating a maximum line pressure of 25 PSI. The differential setting of 0.5 PSI enables fine-tuned control of steam, air, gas, and non-corrosive fluids. This unit features a 1/4 inch male thread connection and a screw-terminal electrical connection for easy installation. Its 140 Ohm single potentiometer modulation output ensures smooth control signals for compatible controllers and control valves. UL, CSA, and Swiss RE approvals provide trusted safety and performance. Compact and robust, the enclosure measures 4-1/2 inches wide by 2-7/8 inches deep by 6-7/8 inches tall, making it suitable for compact control panels and retrofit projects.

• Differential pressure controller with 0.5 PSI differential for precise modulation.
• Operating range 0–15 PSI; maximum line pressure 25 PSI.
• Brass bellows construction for durability in steam, air, and non-corrosive fluids.
• Inlet/outlet 1/4 inch male thread connection; electrical screw-terminal hookup.
• Modulation output 140 Ohm single potentiometer.
• Media compatibility steam, air, gas, and non-corrosive liquids.
• Certifications UL, CSA, Swiss RE approvals.