where is the egr vavle on 2006 Ford F-350 Super Duty

a light that looks like motor came on had a test it said the egr flow vavle is bad

Asked by for the 2006 Ford F-350 Super Duty
There might be a recall on this ...
Service Bulletin Number: 7219
NHTSA Number: 10023855
Model Years Affected: 2003, 2004, 2005, 2006, 2007
Date of Bulletin: 02/2008

Bulletin Summary: 6.0L--MIL ON--P0401, P0402, P0404, P1335--LACK OF POWER OR SURGE WITH SOME 2003-2007 F-SUPER DUTY, 2003-2005 EXCURSION AND 2004-2008 E-SERIES VEHICLES.
This is under your 2006 Super Duty Common problems and Recalls on
1 more answer , 1 more comment
the egr is centered on the top, front of the engine. it has an electrical connector attached. it can cost $304.00 for a new one at autozone, "OR" you can try cleaning it and spend about $1.99 for a cheap "value" brand can of carb cleaner, a used tooth brush and a steel brush. the egr gets sooted up like crazy and so do the ports inside the intake. the intake needs to be vacuumed out.
i just answered your question with thw $1.99 cheap carb cleaner. i forgot to say that i just did this. my "service engine" light came on and I pulled 4 error codes. all codes cleared after i spent the time (not money) to properly clean the egr and the intake cavity ports. about an hour labor and $1.99 leaves me with plenty of beer money!!!