Technical Manual heater valve

Does it make any difference which way a cable operated heater valve goes in the hose from the head to the heater?
Thanks
Pat

 

You would want it so the cable is going towards the control in the car.

 

Yep what he said...look at the mechanics of the cable operator and how it needs to push/pull for your application they work similar to a gas plug valve so it don't care on the flow.

 

i have seen a few that had an arrow and the words Flow. i don't know why, it looked the same looking in both ends.

 

The manual valve I have here has a stepped flange in the tube a stopper butts up against. I suspect it would be a more efficient flow stop if the flow came from the stopper end. That said, I'm mounting it so the cable operates best from the dash. Gene

 

If its a ball valve type doesn't matter....

 

if its the vane type position it like a carb vane for flow to the heater.

 

It is a vintage air valve with an arrow which would make it a pull to open. NAPA sells a pull to close which would work better for me. But it is a rotating barrel inside and I can't see why it would matter.
Pat
I just called Vintage Air and they say the barrel only seals reliably one way so...

 

Vintage air offers two valves. This one is #46105 - VUH, a pull to open valve and
46104-VUH, a pull to close valve. So it looks like you can get which ever fits your application best.

 

Valves similar to this one, that 39 guy posted, may be able to be installed right side up for a "pull" and flipped right side down for a "push", depending on the geometry and angle of the dangle of the cable end clamp, etc.

 

That's a good point shift Wizard!Love the HAMB! There is always someone with a practical point of view that can save us time and money!

 

I have used F100 1970ish valves a few times. They make a push and pull valve.

https://www.partsgeek.com/catalog/1970/ford/f100/climate_control/heater_valve.html