Hi to all.
In addition to this news, I have some more information.
The company you need to call is: Espresso Mechanics (Cerebos).
The steam valve and wand assembly part number is: 921138.
The price includin gst is $81.59
You will pay no postage at all if you pick up from their factory at:
92-96 Station rd
Seven Hills nsw 2147
or from the Moccopan shop in Albert st Preston.
I am guessing that they will have outlets on oter major centres.
As a side note, the new steam valve has a much inpreved feel and seal than the old and the new groovier knob costs only $14.57
I hope this information is useful to anyone interested.