Heater control valve

[75MIKE]

Just a small rant on quality of the metal valves. 2 new from Tom's which I'm sure they all have the same supplier. Couldn't blow air through the last one. Full run with the replacement they sent and it may as well been open. Do you think the metal warms up and losses tolerances? I'm stumped as I don't remember my really old one doing that. I guess trying a new plastic is next since heat on 90 degree days isn't that pleasant. I had a old plastic one that finally seized up and cable couldn't turn it.


Thank you and I'll pay for the full hour of counseling.

 

[tasker]

I have some oem delco valves, can look to see if i can find them though!

 

[75MIKE]

I have some oem delco valves, can look to see if i can find them though!

I would certainly like to try one. Thank you

 

[tasker]

I'll look for them...

 

[m_m70]

I had one of the plastic ones come apart on me and made a hell of a mess. Top blew right off.

 

[phred]

BC Broncos used to sell a control valve that screwed into the port on the intake manifold. It was manual and required you to open the hood and turn it on and off. It was brass and doesn’t leak. I’ve had one on my rig for nearly 20 years

 

[joebronco73]

BC Broncos used to sell a control valve that screwed into the port on the intake manifold. It was manual and required you to open the hood and turn it on and off. It was brass and doesn’t leak. I’ve had one on my rig for nearly 20 years

Does that mean you'll always get some trickle of warm air from the heater when driving, unless you close it?

 

[phred]

Unless you close the valve water is flowing into the heater core. I like it because you can complete isolate the heater core in the summer

 

[MarsChariot]

The original heater valves use to do that. I drove all summer back when without noticing heat at the vents. Suddenly, one day all the heater valves no longer do that. You can blow through them in the "closed" position. It is time someone either finds a workable alternative (and the plastic one is worse frankly) or someone builds something that will work for us. Many older vehicles use this valve, so it would not be a limited run.

 

[joebronco73]

The original heater valves use to do that. I drove all summer back when without noticing heat at the vents. Suddenly, one day all the heater valves no longer do that. You can blow through them in the "closed" position. It is time someone either finds a workable alternative (and the plastic one is worse frankly) or someone builds something that will work for us. Many older vehicles use this valve, so it would not be a limited run.

It's probably to avoid bacteria/mineral buildup in the heater core, but I like the idea of not having hot air blowing in the summer!

Unless you close the valve water is flowing into the heater core. I like it because you can complete isolate the heater core in the summer

This is giving me all sorts of ideas about using a valve-integrated into a bypass, which could also use a check valve. Maybe this is too engineered, but that's on my mind from work anyhow

 

[m_m70]

I ended up using a brass valve and haven't had any issues with it since.

 

[MarsChariot]

I have a shut-off "brass" valve, but that does not replace the heater temperature control valve that allows you to increase or decrease the warmth of the air coming from the heater depending on interior needs. The brass shut off is just for summer. There are warm winter days when the darn valve just lets too much hot fluid flow through the heater core.

 

[75MIKE]

I ended up finding an OEM steel valve and will try that. So tired of AF junk.

 

[gnpenning]

Larger trucks used shut off valves for years. Many a new driver froze their butt off while others smiled until it got dangerously cold.

 

[tasker]

Found the Valves...pm your address

 

[BajaBronco]

I use a metal one that looks original and have them in stock. I had a plastic one turn my Bronco into a smoke machine one day pouring coolant all over the manifolds. Never had one seize up ....

 

[SLOWnEASY]

I was just about to ask about my new replacement valve from Dennis Carpenter bleeding heat when it is off until I found this thread. I guess I'm not alone in getting frustrated that everything is so cheap it's almost like not worth trying.

 

[75MIKE]

I was just about to ask about my new replacement valve from Dennis Carpenter bleeding heat when it is off until I found this thread. I guess I'm not alone in getting frustrated that everything is so cheap it's almost like not worth trying.

Try to find an OEM. Shuts tight. I no longer have this problem.

 

[SLOWnEASY]

Thanks guys. I'm starting by emailing Dennis Carpenter who sold me the valve. Not sure if it will go anywhere but nothing will change is they don't know it's a problem.

 

[Speedrdr]

This is giving me all sorts of ideas about using a valve-integrated into a bypass, which could also use a check valve. Maybe this is too engineered, but that's on my mind from work anyhow

If you do, in fact, come up with a plan/design please post pics and explanation of it. I’m betting that there are more people than me interested in such a design, over engineered or otherwise.