Which device is used to verify water level on a steam boiler?

Which device is used to verify water level on a steam boiler?

• A. Try cocks
• B. Gauge glass
• C. Sight glass
• D. Water column

Answer: (A)

The water level in a steam boiler is shown directly by the gauge glass, also called a sight glass. This transparent tube is connected to the boiler at two points so the water level inside the glass matches the boiler’s water level. You can see, at a glance, where the water sits relative to the steam space, which is essential for safe operation and proper boiler control. Try cocks, by contrast, are small valves used to sample boiler water to test quality or rough level when needed, but they don’t provide a continuous, direct indication of the level. Water column is another type of indicator used on some boilers, but gauge glass is the standard visual indicator most often used.

The water level in a steam boiler is shown directly by the gauge glass, also called a sight glass. This transparent tube is connected to the boiler at two points so the water level inside the glass matches the boiler’s water level. You can see, at a glance, where the water sits relative to the steam space, which is essential for safe operation and proper boiler control.

Try cocks, by contrast, are small valves used to sample boiler water to test quality or rough level when needed, but they don’t provide a continuous, direct indication of the level. Water column is another type of indicator used on some boilers, but gauge glass is the standard visual indicator most often used.