At what pressure is the bleed air regulated for the potable/wash water system?

The potable/wash water system on the CRJ550 aircraft operates at a bleed air pressure regulated to 30 psi. This pressure is crucial because it ensures that there is adequate airflow for the system to function effectively, providing needed water for potable and washing purposes. Regulating the bleed air at this specific pressure strikes a balance between ensuring efficient operation without overloading the system, which could potentially lead to malfunctions or inadequate water service.

In addition, the selection of 30 psi aligns with standard practices within aircraft systems where system components are designed to operate reliably at specific pressure levels, optimizing both functionality and safety. A higher or lower regulated pressure could disrupt the water supply system’s operation or be outside of design tolerances, leading to inefficiency or failure.