Which statement about the nitrous oxide central supply temperature is correct?

Which statement about the nitrous oxide central supply temperature is correct?

• A. -50°F to 100°F
• B. -20°F to 125°F
• C. 0°F to 50°F
• D. -5°F to 110°F

Answer: (B)

Maintaining a safe and predictable delivery pressure is the main idea here. Nitrous oxide is stored as a liquid under pressure, so its pressure in the system varies with temperature. If the central supply gets too hot, the vapor pressure rises and can push regulators and piping beyond their safe limits. If it gets too cold, pressure can drop or moisture can freeze in lines, causing blockages or frost-related issues. The standard, safe operating range for the central supply temperature is -20°F to 125°F because it keeps these pressures within what the equipment is designed to handle, avoiding overpressure and delivery problems. The other ranges push the system toward overpressure, underpressure, or freezing issues that compromise safety and performance.

Maintaining a safe and predictable delivery pressure is the main idea here. Nitrous oxide is stored as a liquid under pressure, so its pressure in the system varies with temperature. If the central supply gets too hot, the vapor pressure rises and can push regulators and piping beyond their safe limits. If it gets too cold, pressure can drop or moisture can freeze in lines, causing blockages or frost-related issues. The standard, safe operating range for the central supply temperature is -20°F to 125°F because it keeps these pressures within what the equipment is designed to handle, avoiding overpressure and delivery problems. The other ranges push the system toward overpressure, underpressure, or freezing issues that compromise safety and performance.