Which component on the station inlet is described as providing isolation of the gas supply?

Which component on the station inlet is described as providing isolation of the gas supply?

• A. A main vacuum line
• B. A primary valve
• C. A secondary valve
• D. A pressure gauge

Answer: (B)

Isolating the gas supply at the station inlet is done with the primary valve. This valve acts as the main shut-off, allowing you to stop flow from the pipeline into the station for maintenance or safety. The other components don’t provide isolation: the main vacuum line is for suction, not gas shut-off; the pressure gauge only measures pressure; a secondary valve may offer additional downstream isolation, but the primary valve is the component specifically designed to isolate the supply.

Isolating the gas supply at the station inlet is done with the primary valve. This valve acts as the main shut-off, allowing you to stop flow from the pipeline into the station for maintenance or safety. The other components don’t provide isolation: the main vacuum line is for suction, not gas shut-off; the pressure gauge only measures pressure; a secondary valve may offer additional downstream isolation, but the primary valve is the component specifically designed to isolate the supply.