When using nitrogen, the nitrogen tank should always be equipped with a:

• A. Gauge
• B. Hose
• C. Regulator
• D. Valve

Answer: (C)

Controlling the pressure from a compressed gas cylinder is essential for safe operation. Nitrogen tanks store gas at very high pressures, so you must reduce that pressure to a safe, usable level and regulate the flow to downstream equipment. A regulator does exactly that: it drops the high cylinder pressure to a set, workable output and lets you adjust the flow as needed, preventing dangerous releases and equipment damage. A gauge only measures pressure, and a hose simply connects gas to equipment, but neither controls or reduces pressure. A valve on the tank can isolate the gas, but it does not regulate the pressure or provide a safe, controlled delivery. Therefore, the regulator is the essential component to use with a nitrogen tank.