Description
Johnson Controls P74FA-10 Differential Pressure Control Overview
The Johnson Controls P74FA-10 is a precision-engineered differential pressure control designed for reliable pressure sensing and switching in commercial and industrial HVAC applications. Featuring a single-pole, double-throw (SPDT) switching action, this control responds accurately to changes in system pressure, making it an ideal choice for hydronic systems, refrigeration circuits, and air-handling equipment where tight pressure management is critical.
Key Features
- SPDT (Single-Pole, Double-Throw) switching configuration for versatile circuit control
- Narrow switch differential for precise, responsive pressure switching
- Operating pressure range: 2 PSI to 26 PSI
- Fixed differential: 1½ PSI for consistent, repeatable switching performance
- Compact, rugged construction suited for demanding HVAC and refrigeration environments
- Designed for differential pressure sensing across filters, coils, and other system components
Application
The P74FA-10 is well-suited for monitoring pressure drop across air filters, heat exchangers, and hydronic system components. Its narrow, fixed differential ensures the control actuates and resets at precise, predictable pressure points, reducing nuisance trips and improving system reliability. The SPDT output allows integration into a wide range of control circuits, including alarm, shutdown, and interlock functions.
Product Specifications
- Brand: Johnson Controls
- Model / SKU: P74FA-10
- Switch Type: SPDT (Single-Pole, Double-Throw)
- Switch Differential: Narrow (Fixed)
- Pressure Range: 2 PSI to 26 PSI
- Fixed Differential: 1½ PSI
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