Which item is part of a sewage lift level control system?

• A. Float
• B. Well Point
• C. Gate Valve
• D. Lantern Ring

Answer: (A)

In a sewage lift level control system, sensing and responding to the wastewater level is done with a float device. A float sits on the liquid surface and moves upward or downward with the level, operating a switch or relay that starts or stops the pump to maintain desired levels and prevent overflow or dry running. The float provides a simple, reliable way to translate liquid level into an electrical signal for control.

Other items have different functions: a well point is used in dewatering soils, not for sensing lift levels; a gate valve controls flow but does not sense level; a lantern ring is used around a pump packing to seal and lubricate, not for level control.