Description
The Johnson Controls P74AA-1 Differential Pressure Control is an essentialpart of HVAC systems that is required to measure and control the exact pressure differentials. The device uses an SPST switch with Close-degree action and is effective for pressure ranging from 8 to 70 PSI with stainless steel bellows. Such control makes it possible to achieve the right airflow and pressure which are essentialaspects in HVAC in comfort and efficiency. This is because it is commonly used in ventilation systems, ducting and air handling units where one has to manage some specific pressure variations.
