Gas flex hoses installed in industrial appliances shall not exceed how many feet?

Gas flex hoses installed in industrial appliances shall not exceed how many feet?

• A. Not exceed 4 ft
• B. Not exceed 6 ft
• C. Not exceed 8 ft
• D. Not exceed 10 ft

Answer: (B)

Flexible gas hoses used to connect industrial appliances to the gas supply are limited in length to reduce leakage risk and mechanical stress on the fittings. Keeping the length to six feet helps control pressure drop and makes the connection easier to inspect, while also reducing the chance of damage from movement, vibration, or contact with harmful surfaces. The hose must be approved for gas service and installed with proper fittings, supports, and away from heat or pinch points. If more distance is needed, use rigid piping or a different arrangement that complies with NFPA 54, ensuring shutoff capability and proper accessibility.

Flexible gas hoses used to connect industrial appliances to the gas supply are limited in length to reduce leakage risk and mechanical stress on the fittings. Keeping the length to six feet helps control pressure drop and makes the connection easier to inspect, while also reducing the chance of damage from movement, vibration, or contact with harmful surfaces. The hose must be approved for gas service and installed with proper fittings, supports, and away from heat or pinch points. If more distance is needed, use rigid piping or a different arrangement that complies with NFPA 54, ensuring shutoff capability and proper accessibility.