Types of Valve plugs

What are the different types of plugs ?

The different types of plugs are generally used are :

( 1 ) V. port plug ( 2 ) Contoured plug

V-port plug:

Ported plug are generally used on double seated valves. This is because ported plugs, have a more constant off balance area.

Contoured plug:

Contoured plugs are generally used on single seated valve with small trim sizes.