Potable water pressure is provided by _____________________?

Potable water pressure is provided by _____________________?

• A. Electrical supply from the water pump
• B. Air supply boost system and bleed air
• C. Hydraulic pressure
• D. Ground power unit pressure

Answer: (B)

Potable water pressure is provided by an air-driven boost system that uses bleed air. This means the pressure to the water tanks and distribution lines comes from a device powered by bleed air from the engines or APU, ensuring consistent water pressure to galley and lavatory taps throughout flight. Electrical, hydraulic, or ground power sources aren’t used to pressurize the potable water in flight, so those options don’t supply the needed, reliable pressure.

Potable water pressure is provided by an air-driven boost system that uses bleed air. This means the pressure to the water tanks and distribution lines comes from a device powered by bleed air from the engines or APU, ensuring consistent water pressure to galley and lavatory taps throughout flight. Electrical, hydraulic, or ground power sources aren’t used to pressurize the potable water in flight, so those options don’t supply the needed, reliable pressure.