Explorer Heater Bypass Valve
With a little creative vacuum-line routing, this valve is easy to retrofit to any vehicle not originally equipped, so as to keep heat out of the cab, and out of the A/C airstream during summer, while still allowing full coolant flow past the temperature sender & the ECT. Set it up so that without vacuum applied, coolant flow is normal; and with vacuum (spliced into the white recirculate door line), it's in bypass.
![heatervalve.jpg Explorer Heater Bypass Valve
With a little creative vacuum-line routing, this valve is easy to retrofit to any vehicle not originally equipped, so as to keep heat out of the cab, and out of the A/C airstream during summer, while still allowing full coolant flow past the temperature sender & the ECT. Set it up so that without vacuum applied, coolant flow is normal; and with vacuum (spliced into the white recirculate door line), it's in bypass.
[url=https://www.supermotors.net/registry/media/992200][img]https://www.supermotors.net/getfile/992200/thumbnail/38htrvlv.jpg[/img][/url]](https://www.supermotors.net/getfile/985443/fullsize/heatervalve.jpg)