Hardi 334553: Diaphragm for Suction Air Bottle

HARDI diaphragm for a suction air bottle. It regulates air pressure in the suction system, helps maintain consistent sprayer-pump performance, and forms part of the pulsation damper assembly to minimize pressure fluctuations for smooth fluid delivery. The black suction-side pump cap measures approximately 4 inches (100 mm) in outside diameter.