What Is Globe Valve And Its Major Applications

Update:08-10-2018
Summary:

Globe valves are used to control the flow of liquid in […]

Globe valves are used to control the flow of liquid in a pipeline. They can be used to either stop fluid flow completely, slow it down or allow the fluid to flow freely. Globe valves have a globe-shaped body, a flat piece and a ring that the flat piece fit into to stop the fluid flow.

 

A Globe valve is a mechanical device that uses a conical seat and plug arrangement typically at a right angle to flow. the plug is moved by a threaded shaft. They are typically used to control flow as they are reasonably linear in their response, but should only be used in one flow direction.

 

Globe valves are linear motion valves that are widely employed to stop, start and throttle flow. Globe valves are designed with a stem that moves up and down to regulate flow inside the valve, 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. These types of modulating valves are most commonly used to valve throttle, open or close flow in a system.

 

The Advantages:

  • Good shutoff capability.
  • Moderate to good valve throttling.
  • Shorter stroke (compared to a gate valve).
  • Easy to machine or resurface the seats.
  • Can be used as a stop-check valve.

 

The Disadvantages:

  • Higher pressure drop (compared to a gate valve).
  • Requires greater force or a larger actuator to seat the valve.

 

There are several typical applications of globe valves wholesalers like Cooling water systems, Fuel oil systems, Feedwater or chemical feed systems, Boiler and main steam vents and drains, Turbine lube oil system and others.