SELECTION METHOD OF GLOBE VALVE

SELECTION METHOD OF GLOBE VALVES

• The globe valve, as the name suggests is a

Introduction

linear motion valve with a round globular shaped body which is commonly known as a form of mechanism that is used mainly to impede or regulate the flow of gas or liquid within a pipe.

• The globe valve has a plug that is connected to a stem that functions by means of a screw action in the manual valves.

Functions • Globe valves are used for the throttling systems because the change of gradual spacing between the disk and seat ring gives these valves a good throttling ability apart from this they are used as shut on/off valves.

• It can also be utilized in other applications due to its linear motion but only as long as the pressure and temperature limits remain under the control.

• The globe valve has a disk that opens completely or closes completely the flow path.

Control Method

• The circular space present between the disk and seat ring gradually changes in order to facilitate the fluid flow through the valve.

• These valves are fitted with a stem vertical while the fluid stream is connected to the side of the pipe above the disk which helps in maintaining a tighter seal when the valve is fully closed.

• The globe valves are used for both liquid

Media

and gaseous systems, but these are not preferred for slurry or high purity systems.

Here in this valve, the media flow rate is determined by the distance between the valve seat and the valve plug.

Selection Criteria • Being mainly used as a block valve or for flow regulation, where the resistance to the flow is not of a positive or critical closing action.

• These valve types are made out of metallic alloys but there are few products that use synthetic materials which are utilized according to the temperature, pressure and controlled media properties.

• Valves can last longer once it gets treated with the process of erosive and corrosive steams that requires a proper materials selection and body coatings.

• While selection look for linear actuators that are directly coupled and have passed the quality control specifications i.e., UL FM approved valves and WARS approved valves which guarantees that the valve manufacturers were able to meet required and demanded quality.

• The coupled actuators should be structured in such a way that they are easy to mount and should be done without any need for any adjustments, adapters, linkages or brackets.

• The globe valves should be built based on the percentage of flow characteristics in accordance with water and characteristics of linear flow along with steam applications.

• The valve’s accurate positioning should be verified to ensure when in use they will provide proper temperature control.

• Search for the valve models that contain a pressure balance and we are known for the best valve stockist, hence it helps to obtain a higher closure.

Conclusion • Fevisa, being one of the leading Valve Manufacturers and Globe Valves Supplier always ensure that the client is given with a proper valve solution and installation which is of primary importance.

• Our Valves made in Europe and we are known as ex- stock valves good in packing, dispatching and after-sales service and our uncompromising quality make the buyer to approach us for future dealings.