I have a 2004 TF 135.  It has a PRT and I have always assumed that it is standard for the car. 

I have to confess to knowing almost nothing about the jiggle valves.  I assumed my car must have one (or more) but I have no idea where it is or what it looks like! I remember from the thermostat in my Austin A35 that it had a strange little dangly metal bit hanging through a small hole in the metal ring around the stat.  I never knew what it was; was that a jiggle valve?

What I can say, with some degree of certainty, is that water pumps into the expansion vessel right from starting the engine.  It can be seen quite clearly with the pressure cap removed.  I have assumed that this is normal.

Does this help at all?  It's chucking it down now, but I am happy to check it out if it answers any questions.

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