| Re: New '71 A/C Hot Water Bypass Valve. 20* Colder at Registers :) |
Subject: Re: New '71 A/C Hot Water Bypass Valve. 20* Colder at Registers :) by xccter on 2012/4/19 1:01:17 Yes it's vacuum operated. The valve is always open UNLESS "MAX A/C" is selected, at which time vacuum is applied to the valve and it closes off the flow of hot coolant to the heater core. Mark |
