What type of system can a vapor steam system be classified as?

A vapor steam system is classified as a gravity system. This classification is based on how steam moves within the system. In a gravity system, the flow is primarily driven by the gravitational force acting on steam and condensate. As steam rises through the piping network, once it condenses back into water, gravity assists in the downward drainage of condensate back to the boiler or other heat sources for re-heating.

Gravity systems are designed to ensure that the condensate can move freely downward without requiring mechanical pumps, relying instead on natural gravitational pull. This characteristic is fundamental to the operation of vapor steam systems, which emphasizes efficient drainage to maintain system efficiency and reliability.

Understanding this classification helps in recognizing the operational dynamics and maintenance requirements of steam systems, as other types like pressure, vacuum, or combination systems involve different mechanisms for fluid movement and management.