A globe valve is comprised of two halves, separated by an opening with a moveable plug or disc that can be screwed in, or unscrewed to open and close. They're most commonly used to open, close, or throttle flow in a system.

All globe valves are designed with a stem that moves up and down to regulate flow inside the valve, contains a disc (ball, composition, or plug), and seat which is generally screwed into the valve body. Seats are designed in plane parallel or inclined to the line of the flow.

There are three basic globe valve body designs: Tee, Angle, and Wye.

Globe valves are beneficial for many applications where flow must be regulated and a constant flow of fluid is not necessarily required. Below are just a few common applications where you might find a globe valve:

• Cooling water systems
• Fuel oil systems
• Feedwater or chemical feed systems
• Boiler and main steam vents and drains
• Turbine lube oil system and others

ADVANTAGES

• Globe valves have both good throttling and shutoff capabilities
• Easy to maintain and resurface the seats
• Can be used as a stop-check valve if the disc is not attached to the stem

DISADVANTAGES

• High pressure drop
• Requires greater force or a larger actuator to seat the valve