Heater control valve

[cj2atruck]

During the summer, I want to interrupt the water circulating through the heater core, as it adds heat to the interior. Looking at installing something like this manual valve. Has anyone installed a heater control valve or something similar?

 

[Fireball]

Since the Buick V-6 has a bypass, you really don't need to keep the loop intact when the heater is off. You can just block one of the lines to stop the flow. I put a single manual valve in one of the lines on the Dj-3A:

This is the one I used: https://www.amazon.com/Uenede-Conditioning-Operation-Automotive-Fittings/dp/B0CP78XT94

Cable actuated ones like this are readily available if you want to control it from inside the cab:

 

[FinoCJ]

Cable actuated ones like this are readily available if you want to control it from inside the cab:

I use the cable one....

 

[45es]

Since the Buick V-6 has a bypass, you really don't need to keep the loop intact when the heater is off.

What Roy says is very true but never mentioned is; by using a cable or vacuum controlled bypass valve, the valve can be used as a mixing valve and control heater output temperature.

 

[cj2atruck]

Well, that was certainly a worthwhile question to ask. Simple fix with either valve.

 

[Fireball]

What Roy says is very true but never mentioned is; by using a cable or pneumatic controlled bypass valve, the valve can be used as a mixing valve and control heater output temperature.

Yes! I forgot to mention that.

 

[Jw60]

I used a plastic cable control valve.

 

[cj2atruck]

Hmmm, seems I’m late to the party on a heater control valve. Will get remedied next week…