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heater vacuum valve on 1964 a/c/ car
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01-18-2024, 09:34 PM
mgarblik
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Join Date: Mar 2005
Posts: 6,102
Glad it worked out. Was not aware of the valves having a restriction, but it makes sense. To keep a surge of water from damaging it when the thermostat opens. They do that to protect the heater core as well.
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