Propane dispenser hose shall be listed for LP-gas and designed for a working pressure of ______ with a safety factor 5:1.

Propane dispenser hose shall be listed for LP-gas and designed for a working pressure of ______ with a safety factor 5:1.

• A. 350 psig
• B. 300 psig
• C. 400 psig
• D. 450 psig

Answer: (A)

Propane dispenser hoses must be listed for LP-gas and designed with a defined working pressure that includes a substantial safety margin. The working pressure is the continuous pressure the hose is expected to carry during normal operation. A safety factor of 5:1 means the hose must have a burst pressure at least five times higher than that working pressure, providing a large margin against pressure surges or accidental overpressures. For LP-gas dispenser hoses, the standard working pressure rating used is 350 psig. With a 5:1 safety factor, this implies a burst pressure of at least 1,750 psig, which ensures safe operation under typical conditions and transient spikes. The other listed values do not reflect the standard rating applied to LP-gas dispenser hoses in practice.

Propane dispenser hoses must be listed for LP-gas and designed with a defined working pressure that includes a substantial safety margin. The working pressure is the continuous pressure the hose is expected to carry during normal operation. A safety factor of 5:1 means the hose must have a burst pressure at least five times higher than that working pressure, providing a large margin against pressure surges or accidental overpressures.

For LP-gas dispenser hoses, the standard working pressure rating used is 350 psig. With a 5:1 safety factor, this implies a burst pressure of at least 1,750 psig, which ensures safe operation under typical conditions and transient spikes. The other listed values do not reflect the standard rating applied to LP-gas dispenser hoses in practice.