What is the purpose of a gated wye?

• A. To split one line into two separate lines feeding different branches.
• B. To merge two lines into one.
• C. To regulate flow in a single line.
• D. To connect a booster hose to a pump.

Answer: (A)

The key idea is that a gated wye is used to split one hose line into two separate lines, with a gate valve that lets you control flow to the second branch while the first continues to flow. This setup is handy when you need to feed two attack lines or reach two different areas from a single supply, while still being able to throttle one branch as needed. It’s different from a plain wye, which divides flow without valves, and it’s not about merging lines or connecting booster hoses to a pump.