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I am rebuilding the A/C in my 76 Is there supose to be an orifice tube or does the VIR valve do that job??? I can't find in any of my service manual for a 76 that mention one I see they are used in 1977 
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VIR stands for Valves In Reciever. Every valve and control in in the VIR unit. It uses a Thermo expansion valve. There is no orifice tube.
Ken Styer
Ken Styer
On the "Tail of the Dragon"
(some day, no strike that, October 2008 it turned red, still in progress!)
(click either image to see a bigger version)
(some day, no strike that, October 2008 it turned red, still in progress!)
(click either image to see a bigger version)
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in Forum: C3 HVAC, Fuel, Emissions, and Exhaust
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