Shellane provides several innovations on their LPG cylinders providing them an automatic shut-off (AS) valve.Its their answer to the alarming cases of fire that causes from using substandard LPG tanks.This valve temporarily closes when the gas pressure from the tank suddenly increases, which is a common sign of leakage. The safety feature prevents any LPG leakage from external defects like a cut hose or a malfunctioning stove.Shellane products are protected with trademark orange safety seals to prevent intrusion of any foreign objects. Safety caps are also attached to the passageway to the valve to prevent tampering.Shellane also encourages their consumers to re-attach this cap before returning the tank to the dealer to guarantee safer transfer.