Description
Honeywell L91A1078 Proportional Pressuretrol Controller, 10–300 PSI Operating Range, 12 PSI Differential, Brass Bellows
Overview
The Honeywell L91A1078 is a modulating proportional pressuretrol controller designed for precise pressure regulation in systems utilizing steam, air, noncombustible gases, or other non-corrosive fluids. Engineered with robust brass or phos-bronze bellows, this controller is suitable for high-pressure applications with an operating range from 10 to 300 PSI.
Key Features
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Operating Pressure Range: 10 to 300 PSI, with a maximum pressure rating of 325 PSI.
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Pressure Differential: Fixed 12 PSI differential for accurate pressure modulation.
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Temperature Range: Suitable for use in ambient temperatures between 32°F and 150°F.
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Material: Durable brass or phos-bronze bellows designed to withstand non-corrosive fluids.
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Connection: Standard 1/4" NPT external thread for easy installation.
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Control Type: Modulating operation for smooth and consistent pressure control.
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Electrical: Single potentiometer with 140 Ohms resistance.
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Compatibility: Ideal for steam, air, noncombustible gases, and compatible fluids.
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Important Note: Not suitable for combustible media or fluids chemically harmful to brass or phos-bronze bellows.
Technical Specifications
| Specification | Details |
|---|---|
| Operating Pressure Range | 10 to 300 PSI |
| Pressure Differential | 12 PSI |
| Max Pressure | 325 PSI |
| Min Pressure | 10 PSI |
| Temperature Range | 32°F to 150°F |
| Electrical Resistance | 140 Ohms |
| Connection Type | 1/4" NPT External Thread |
| Bellows Material | Brass / Phos-Bronze |
| Control Action | Modulating |
Applications
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Precise pressure control in high-pressure steam, air, and noncombustible gas systems.
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Industrial and commercial equipment requiring modulating pressure regulation.
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Suitable for applications where durability and resistance to non-corrosive fluids are essential.
