What is a key characteristic of non-return type steam traps?

A key characteristic of non-return type steam traps is their ability to prevent backflow. This functionality is critical in steam systems as it ensures that condensate can drain out while steam remains contained within the system. By preventing the reverse flow of steam or condensate back into the boiler or steam supply lines, non-return type steam traps contribute to the efficiency and operational safety of high-pressure boiler systems.

This design minimizes the risk of water hammer and the potential damage caused by condensate pooling, which can lead to system inefficiencies and failures. Consequently, non-return type steam traps are vital for maintaining optimal performance in steam systems by allowing only condensate to discharge without permitting steam to escape.