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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
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in Forum: C3 HVAC, Fuel, Emissions, and Exhaust
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