The two valves on a boiler blow off or what type?

The two valves on a boiler blow off or what type?

• A. Angle globe and a quick opening
• B. Gate and globe
• C. Ball and check
• D. Butterfly and globe

Answer: (A)

The idea is that a boiler blowdown line uses two valves: an angle globe valve for throttling and a quick-opening valve for rapid discharge. The globe-type valve provides smooth, controllable flow and a good seal, which is ideal for regulating how much water you blow down to remove impurities without shocking the boiler. The quick-opening valve is designed to open rapidly, allowing fast, full discharge when you need to purge quickly or perform an emergency blowdown. Put together, you get both precise control and a fast response. The other pairings don’t fit because they don’t combine a valve suited for careful throttling with a valve designed for quick, large-volume opening.

The idea is that a boiler blowdown line uses two valves: an angle globe valve for throttling and a quick-opening valve for rapid discharge. The globe-type valve provides smooth, controllable flow and a good seal, which is ideal for regulating how much water you blow down to remove impurities without shocking the boiler. The quick-opening valve is designed to open rapidly, allowing fast, full discharge when you need to purge quickly or perform an emergency blowdown. Put together, you get both precise control and a fast response. The other pairings don’t fit because they don’t combine a valve suited for careful throttling with a valve designed for quick, large-volume opening.