Description
The Johnson Controls P74HA-9 Differential Switch is an essentialpart that is utilized to measure pressure differentials in HVAC systems. This measures pressure between two points and should be triggered when pressure increases beyond a specific range in this case 8 to 60 PSI. Because it is an Open High differential type, it shields against overpressure circumstances that may be dangerous to equipment or endanger safety only when the pressure goes beyond the established limit. Some of them are improved equipment protection and better performance since they prevent pressure-related failures.
