What is the primary function of a hose bibb?

The primary function of a hose bibb is to provide an outdoor faucet connection. Hose bibbs are typically installed on the exterior of a building and are designed to allow for easy access to water outside, making them ideal for tasks such as watering gardens, washing cars, or filling up buckets. They usually feature a standard threading that accommodates garden hoses and often come equipped with a shut-off valve for controlling the water flow.

In contrast, other options describe functions that hose bibbs do not serve. For instance, while indoor plumbing connections are crucial for delivering water throughout a building's systems, hose bibbs specifically cater to outdoor use. Similarly, hose bibbs are not designed to function as waste water drains nor do they regulate indoor water pressure, which is managed by different plumbing components. Thus, the role of a hose bibb as an outdoor faucet connection is essential and distinct from other plumbing functionalities.