Gate valve
A bowtie body with a vertical stem and handwheel marks a gate valve. Gate valves are isolation devices, fully open or fully closed, never modulated.
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How it’s drawn.
A bowtie valve body with a vertical stem and a handwheel on top. The handwheel marks hand operation. The gate valve is an isolation device, drawn to sit fully open or fully closed rather than to throttle. It appears as a block valve around equipment and on lines that need a clean manual shutoff.
Typical usage.
Block valves on pipelines, isolation around equipment, manual maintenance points. Gate valves are not control valves and should never be paired with a positioner.
Telling it apart.
- A handwheel on a bowtie body points to a gate valve for isolation, not a control valve.
- Gate valves are not meant to modulate. A positioner or control actuator on the body would indicate a different, throttling valve.
- The body shape alone is shared with the globe valve. The stem-and-handwheel and the block-valve context are what mark the gate.