How familiar are you with different types of pipe valves? If possible, name a few that you are familiar with.

"I have some familiarity with different types of valves and have used check valves and butterfly valves in some plumbing projects that I have taken on. I know there are a host of others that are commonly used in water treatment facilities like ball valves to regulate pressure and flow, as well as newer solenoid valves for automatic flow control. Are there other types of pipe valves that I would be frequently exposed to in this role as a water treatment operator?"

If you have experience in working with different types of pipe valves, you can list the types of pipe valves that you have worked with most. Some of the more common valves used in water treatment plants are ball valves, gate valves, globe valves, butterfly valves, and check valves. Try to conduct a bit of research on this topic prior to your interview so you can come prepared to speak knowledgeably on the subject.