Tennessee Wastewater Operator Practice Exam

What is included in the maintenance of gate valves?

1. Replacing damaged valve bodies

2. Operating inactive valves to prevent sticking

3. Cleaning out the valve with acid

4. Removing valves from their pipes for inspection

The correct answer is: Operating inactive valves to prevent sticking

Operating inactive valves to prevent sticking is a critical aspect of maintenance for gate valves. Gate valves, like many types of valves, can become stuck if they are not exercised regularly. This sticking typically occurs due to sediment buildup, corrosion, or simply because of lack of movement. By periodically operating these valves, operators can ensure that they remain functional and can be closed or opened when necessary. This practice not only helps in maintaining the valves in a good working condition, but also prevents emergency situations where a valve may be needed but fails to operate. Regular operation also allows the operator to assess the valve’s performance and identify any potential issues before they become serious problems. This proactive maintenance step is essential in ensuring that the overall wastewater management system operates efficiently and effectively.