I don't use partimage a lot and when I use it I tend to use it via it's text interface, but the other day we wanted to send the output of partimage to another computer through the network, and partimaged was not an option.
After looking around a couple of times the final answer came from a changelog file and we ended up with this magical line that I'm writing here and which works really well.
Linea mágica para mandar la salida de partimage por la red usando la salida estándar:
partimage -f3 -d -V0 -B gui=no save /dev/sda1 stdout | nc -w 60 address port
It seems partimage has some kind of problems while doing a restore of a compressed file, so the recipe for that should be something like...
nc -w 60 address port | gunzip | partimage -f3 -B gui=no restore /dev/sda1 stdin
or you can make nc listen as usual.