It is not only about the NOzzle load we talk in Stress Analysis.TO let your system perfectly balance you need to support the pipe for Dead weight conditions also,Please note line vibrates due to unsupported spans most of the times.

Kart: If you provide a rest support in the line ,make sure to connect it from the column itself , It will grow alongwith the column(27 mm as specified by you) and at the same time will support the pipe.

You can also provide spring support and check the analysis , retain the guide as it is .