Gate valves have rising stems.

• A. True
• B. False
• C. Not sure
• D. Partially

Answer: (B)

Gate valve stems come in two common configurations: rising-stem and non-rising-stem. In a rising-stem design, the stem moves upward as the gate is opened, so you can see the stem rise and gauge the valve’s position. In a non-rising-stem design, the stem stays in place while the gate moves up or down on the threaded stem, so there’s no visible stem movement indicating the position. Because both types exist and are used in different applications, it isn’t accurate to say that gate valves universally have rising stems. The choice depends on design and service needs, such as whether a visual indicator of position or a more compact stem arrangement is preferred.