1. Pumps: Applications requiring overcoming gravity or long-distance transportation, such as deep well water extraction, high-rise water supply, and sewage lifting, rely on a continuous energy supply to maintain liquid movement.
2. Connecting Valves: Applications for balancing and diverting flow between piping systems, such as liquid level control in chemical reactors and pressure balancing in oil storage and transportation pipelines, emphasizing the system's internal self-regulating capabilities.