Does anyone know where I can find more images for use in FPMI, like more pumps, tanks etc?

First of all, you have found the built-in images library, right?

Beyond that, you can use any PNG, JPEG, or GIF image in FactoryPMI. Symbol Factory can export to these formats, and has lots of different graphics to choose from.

Hope this helps,

Yep, i have found the builtin libraries. Ill give symbol factory a try. Thanks