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Username Post: Heater shutoff valve        (Topic#356635)
Whitetail Hunter 
"2nd Year" Platinum Supporting Member
Posts: 201
Whitetail Hunter
Age: 51
Loc: Green Bay Wisconsin
Reg: 03-28-15
06-02-19 06:11 AM - Post#2767531    

Did a 66 with a/c use a heater hose shutoff valve? I cant find any pictures showing one.



 


Crusty66 
"7th Year" Gold Supporting Member
Posts: 361
Crusty66
Age: 59
Loc: Albany, eNZed
Reg: 11-04-12
06-02-19 03:08 PM - Post#2767555    
    In response to Whitetail Hunter

The comfortron models had what looked like a shut-off valve on the passengers side inner fender. This wasn't a shut-off valve, but just a temperature operated vacuum switch. These were sometimes incorrectly called a heater valve.

Steve
1966 Caprice 396 496 496mkII TH400


 
A White Sport Coupe 
"9th Year" Silver Supporting Member
Posts: 399
A White Sport Coupe
Reg: 08-19-10
06-02-19 03:22 PM - Post#2767561    
    In response to Whitetail Hunter

Hi Whitetail

Quoting from the service manual

"Since the unit has no water valve, circulation keeps the core hot at all times. Air passing through the core receives maximum heat from the core."

The four season system and the Comfortron system.

"The temperature knob through its Bowden cable, actuates the door which controls outlet temperature. Since the heater core in this system is hot at all times, this door shuts off the heat when not wanted as well as mixing the hot and cold air.

Comfortron system

The thermal vacuum valve has no control over the circulation of hot water.

The dealer installed custom system runs entirely independent of the heater.



Bob


 
Whitetail Hunter 
"2nd Year" Platinum Supporting Member
Posts: 201
Whitetail Hunter
Age: 51
Loc: Green Bay Wisconsin
Reg: 03-28-15
06-02-19 04:27 PM - Post#2767567    
    In response to A White Sport Coupe

Looking at the heater box and that door. I thought the valve was not needed. But i had one from all the parts I have collected. Thanks for the confirmation.



 


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