Gas Fitter Practice Test

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What is the relief valve setting on a propane cylinder (BBQ)?

375 PSI
250 PSI
175 PSI
35 PSI

The correct answer is: 375 PSI

The relief valve setting on a propane cylinder, specifically for a barbecue, needs to be set at a pressure that ensures safety while allowing for the expansion of gas under temperature changes. The correct setting is typically around 375 PSI. This higher pressure level is designed to prevent the tank from over-pressurizing, which could lead to potential hazards such as rupture or explosion. Manufacturers configure relief valves to open at specific pressure levels to allow excess gas to escape safely if the pressure inside the cylinder exceeds this threshold. It is crucial for maintaining the integrity of the cylinder and protecting users from the dangers of excessive pressure. The other pressure settings provided do not align with standard propane cylinder specifications for relief valves, as they are either too low for the required safety standards or do not meet the operational needs of appliances like barbecues that use propane.