What is a typical symptom of a failing foot valve in a dispensing system?

Inconsistent fuel delivery is a typical symptom of a failing foot valve in a dispensing system. The foot valve serves a critical role in maintaining the prime of the pump by ensuring that the fuel remains in the line when the pump is not in operation. When the foot valve begins to fail, it may not seal properly, leading to a situation where air can enter the system, disrupting the steady flow of fuel.

This inconsistency can manifest as erratic fuel flow during dispensing, where the output may fluctuate or stop completely at times. This symptom indicates that the foot valve is not functioning effectively, which is essential for maintaining a continuous and reliable fuel supply. Understanding this symptom helps operators to identify when maintenance is needed to prevent further complications in the dispensing system, ensuring safe and efficient operations.