Except that hot gas can only expand because of the high initial velocity & the small port surface area..darock hat geschrieben: If you cool a gas, it shrinks in a given pressure environment. P*V = n*R*T
Bernhard
(exceeding the sound barrier in many cases, as it has higher & higher residual pressure dependent on valve opening angle).
If you "shrink" a pressure transient, you increase the capacity of the pipe to carry a higher pressure transient & decrease the size of the peak pressure / make it possible to have a wider pressure pulse,- which is after all what we are trying to achieve in the first place.
So you see s/s and pipe wrap militate against both these aims.