Illinois Plumbing Code Practice 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What type of valve is required for every water piping system?

A relief valve

A shutoff valve

In every water piping system, a shutoff valve is essential for controlling the flow of water. This type of valve is critical because it allows for the easy disconnection or isolation of the water supply in the event of a repair, maintenance, or emergency. The presence of a shutoff valve ensures that any leaks or problems can be managed without needing to shut down the entire water supply system.

Additionally, the Illinois Plumbing Code mandates that shutoff valves be installed in accessible locations. This requirement is important for safety and convenience, ensuring that when urgent action is needed, a plumber or homeowner can quickly locate and operate the valve. By enabling the water supply to be halted effectively, the shutoff valve plays a key role in maintaining the overall integrity and functionality of the plumbing system.

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A pressure-regulating valve

A flow control valve

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