Globe valves are widely used across various industrial systems to control the start, stop, and regulation of fluid flow. However, in real-world operation, many users face a common question: how to accurately determine whether a globe valve is currently open or closed?

This article will explain in detail how to identify the open or closed status of a globe valve based on its structural design, handwheel rotation direction, and stem position. It will also provide a comparison with other common valve types to help engineers and maintenance personnel quickly assess valve status on site.

How to Determine the Open or Closed Position of a Globe Valve

Observe the Handwheel Rotation Direction

• Turning the handwheel clockwise: valve is closed

• Turning the handwheel counterclockwise: valve is open

In most cases, both globe valves and gate valves follow this general standard. However, exceptions may occur in certain special designs such as imported products. It is recommended to refer to the nameplate or user manual for confirmation.

Check Whether the Valve Stem Rises

1) Most globe valves adopt a rising stem design, where the stem visibly rises when the valve opens and lowers or retracts into the valve body when it closes.

2) This feature allows operators to visually determine the valve status, especially useful in field conditions where there is no position indicator.

See If the Handwheel Can Be Turned Further

1) When the valve is fully opened or closed, the handwheel will reach its limit and stop turning.

2) If the handwheel continues to rotate, it indicates that the valve has not reached its intended position. Do not apply excessive force, as it may damage the seal or thread mechanism.

Comparison with Other Valve Status Indication Methods

Ball Valve:
The valve is open when the handle is aligned parallel to the pipeline, and closed when perpendicular. This visual indication is very intuitive.

Butterfly Valve:
Similarly, the valve is open when the handle is parallel to the pipe, and closed when it is perpendicular. Some butterfly valves feature locking devices that allow for flow regulation.

Actuated Valves:
The open/closed status cannot be visually determined. Instead, it relies on control signals or flow meters to confirm the valve position.

Summary and Recommendations

1)   For rising-stem globe valves, the valve position can be determined by observing the stem position.

2)   The handwheel should be operated following the standard rotation directions to avoid misoperation.

3)   If visual inspection is not feasible on site, it is recommended to use auxiliary tools such as pressure gauges, flow meters, or PLC control systems for accurate valve status indication.