Which one of the following statements describes the flow rate characteristics of a typical gate valve in an operating water system?
A. The first 25 percent of valve disk travel in the open direction will produce a smaller change in flow rate than the last 25 percent of valve disk travel.
B. The first 25 percent of valve disk travel in the open direction will produce a greater change in flow rate than the last 25 percent of valve disk travel.
C. The first 25 percent of valve disk travel in the open direction will produce approximately the same change in flow rate as the last 25 percent of valve disk travel.
D. A gate valve that has been opened to 25 percent of valve disk travel will result in approximately 25 percent of full flow rate.
Show Answer
Answer: B
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