SAIT 2nd Year Plumbing Exam 2025 – 400 Free Practice Questions to Pass the Exam

Water hammer valves are commonly needed in specific situations where the sudden stopping or starting of water flow can create a shockwave, leading to noise and potential damage in plumbing systems. The correct answer identifies key household appliances like dishwashers, refrigerator water lines, and laundry equipment as typical areas where these valves are essential.

In these applications, the rapid actuation of valves (as in dishwashers and washing machines) can create pressure surges or "water hammer." Installing water hammer valves in these locations helps to absorb the pressure surges, mitigating the risks of pipe damage, noise, and deterioration of fixtures.

The other options refer to either more limited scenarios or broader situations that do not accurately reflect the specific need for water hammer valves. For example, while kitchen sinks can benefit from water hammer valves, they are not the only location where issues arise. Stating that water hammer valves are needed in all water supply lines overlooks the fact that only certain types require them, making the answer too broad. Lastly, focusing solely on hot water systems ignores that water hammer can occur in both hot and cold water lines, hence limiting the effectiveness of such a statement.