True or False: A quick-disconnect device must have a shut-off valve upstream of it.

A quick-disconnect device is an important safety component in gas applications. Having a shut-off valve upstream of the quick-disconnect device is essential because it allows for complete shut-off of the gas supply when the device is disconnected. This feature helps prevent gas leaks, ensures user safety, and complies with installation regulations and standards.

The shut-off valve serves a critical function by providing a way to isolate the gas supply, enabling safe maintenance, and preventing accidental discharge of gas during disconnection. It also helps maintain system integrity and ensures that gas flow is controlled and contained safely, reducing the risk of potential hazards associated with gas leaks.

In scenarios where multiple applications or different gas types are considered, a shut-off valve provides an additional layer of safety that is universally beneficial and often required by code. Therefore, the presence of a shut-off valve upstream of a quick-disconnect device is not only a best practice but also a necessary requirement for safe gas operations.