Shielded gases in cylinders have pressures that may exceed ____.

In the context of welding, particularly when using shielded gases such as argon, helium, or carbon dioxide, it's important to understand the pressure levels that these gases are stored under. The correct answer indicates that shielded gases in cylinders can have pressures that may exceed 2000 psi.

Standard gas cylinders, especially those used in welding applications, are specifically designed to withstand high pressures to ensure safe storage and transport of gases. These cylinders are made from robust materials that can handle significant pressure, which is necessary due to the compressibility of gases. When gases are stored in cylinders, they are often stored at much higher pressures than what can be safely released during welding tasks.

Understanding this pressure range is vital for safety and effective handling of gas cylinders. It helps welders and technicians recognize the importance of using proper safety gear, adhering to safety protocols while handling these cylinders, and knowing the status of the gas before connection to welding equipment. This knowledge also ensures that the welding operations can proceed without unexpected interruptions that could arise from improper handling or anticipation of cylinder pressures.

The other options indicate lower pressure levels, which do not accurately reflect the high-pressure nature of shielded gas cylinders.