Assembly arrangements

[CAD_user]

I'm trying to insert a sub assembly of a valve In an assembly. That valve has 2 instances. In the First instance the valve is closed, in the Second is open. Do I need to have 2 different assembly files, with the correct positions, or can I have just once?

Here an example of other software, of what I'm trying to do.

https://youtu.be/FOq0f7MEvj4

[pausob]

You should have just one model for the valve assembly.  This valve model should allow you to position the sub-components to achieve the open / closed state.  These states can be captured using the drag bodies / snapshot tool.  The saved snapshots can be re-used in snapshots of higher level assemblies, and for visualization in the valve's drawing (if made accessible as exploded states) 

[StephenW]

When you use the word "instance", everyone is going to assume you are already using a family table.

You have options:

1. Use a family table "instance" and add the dimension that controls the valve open/closed. 

2. Use flexible component to control the dimension in the assembly.

3. Or as pausob described using states.