Shiju,

Not sure exactly what you want to do, but I have been drawing a lot of flow
diagrams that use components (valves, pumps etc) in them.  I build a
collection and store them in another Powerpoint on one or two pages.  I keep
this Powerpoint open as well as the one I am working on. Then just copy and
paste into the new presentation.  Some of the autoshapes will not do what i
want so I make one up using AddPolyline method in VBA (look for it in the VBA
help), this way I can add connector point where I want them etc.  I also use
BuildFreeform, AddNodes and ConvertToShape which allow you to make shapes out
of lines and curves.  You can size and fill the shapes just like the
predefined autoshapes and connect them with connectors.

Hope this helps,
Chuck