Flange only on pump connection

[marco.defina]

Hello,

i have a little problem. I will insert a flange to connect a pipe on a pump.

But if i set a type of flange in the routing preferences:

At the end i have this result:

I will have only the flange indicated with green arrow, the othe two i will not.

This is what i want...

[marco.defina]

It's possible?