Question 207Steam Plants - Assistant Engineer70% to pass
In a boiler water gage glass, a ball check valve is installed on the _______________.
AI Explanation
The correct answer is A) bottom connection only.
In a boiler water gage glass, a ball check valve is installed on the bottom connection to prevent the flow of hot water or steam into the gage glass in the event of a gage glass failure. This helps to prevent injury to the operator and potential damage to the equipment. The ball check valve is not installed on the top connection, as the top connection is used for the air supply that pushes the water level up into the gage glass. The drain valve (option D) is a separate component used to drain the gage glass, and is not related to the location of the ball check valve.
Related Questions
#205 The glass used in a flat-type boiler water gage is protected from the hot steam and water by a/an _______________.#206 The purpose of the mica used in a boiler water gage glass assembly is to prevent _______________.#208 The items labeled "D" and "M" as indicated on the illustration are commonly called _______________. Illustration SG-0020 #209 Bi-color water level indicators, connected directly to the boiler drum, operate on the principle of _______________.#210 Which of the listed problems will happen when the water level of a fire-tube type auxiliary boiler approaches the crown sheet?