heater valves

[Huw Powell <audi@mediaone.net>]

Just picked up a new one and wanted to babble about something i've
noticed.  To can keep score at home along with us here in the studio,
run and get a used or new one from your collection.

[As I look into this piece, with the valve shut, there is no aperture. 
there is a reddish piece of plastic across the middle of the approx. 1
cm dia pipe.  As the valve is opened a tiny hole appears and moves
across the edge of the pipes circumference, widening as it goes.  It is
followed by a 2 more slightly larger holes doing the same thing one
after the other, and then finally the final edge of this complex baffle
piece comes into view - and at the end of the operating levers stroke, a
piece of this baffle still blocks about 1/6-1/4 of the pipes cross
sectional area.]

or skip the wordiness - when its 100% open, it ain't!

As someone with inadequate heat I have to wonder why this is.  Anyone
know?

-- 
Huw Powell

http://www.humanspeakers.com/audi/

82 Audi Coupe; 84 4kq; 85 Coupe GT; 73 F250

http://people.ne.mediaone.net/audi/thoughts.htm