What beneficial feature did the introduction of the steam trap provide to low pressure heating systems?

The introduction of the steam trap brought a significant advantage to low-pressure heating systems by establishing separate pathways for steam supply and condensate return. This function is crucial for maintaining the efficiency of the heating system.

In a properly functioning steam heating system, steam is supplied to radiators or heating units to provide warmth. As the steam releases its heat, it condenses back into water (condensate). The steam trap allows the condensate to return to the boiler without letting the steam escape, ensuring that the system continues to operate effectively without losing valuable energy.

By separating these pathways, the steam trap helps maintain the optimal operation of the system, minimizes the risk of water hammer, and prevents potential damage that can occur if steam and condensate mix improperly. This feature enhances the overall efficiency and reliability of low-pressure heating systems.

While the other choices may describe aspects of steam systems, they do not specifically highlight the critical function of managing steam and condensate flow that is uniquely achieved by steam traps.