In a steam piping system, what device is used to remove condensate?

• A. Backflow preventer
• B. Check valve
• C. Pressure reducing valve
• D. Steam trap or condensate drain

Answer: (D)

In steam piping, condensate removal is essential because as steam travels and gives up heat, it condenses back into water. If that condensate isn’t removed, it can cause water hammer, corrosion, and reduced heat transfer. The device designed to automatically remove this condensate while keeping steam from escaping is the steam trap, often called a condensate drain. It continually discharges condensate from the line and, depending on type, may also vent non-condensable gases, all without letting steam leak out. Other devices mentioned have different functions: backflow preventers stop reverse flow to protect the system, check valves allow one-way flow, and pressure reducing valves lower the system pressure. None of these are intended to remove condensate, so the steam trap or condensate drain is the correct choice.