Manual Heater Hose Valve

I don't get it. You plan to remove the factory water valve that you can operate with the selector panel inside the car and install something you have to go out under the hood and turn off and on?

I don't see where you are "eliminating" anything. You remove one object and replace it with another object. You still have to have heater hoses to conduct the coolant from the block to the heater core.

I admire your effort but perhaps you should consider something else to modify besides this idea.

I appreciate your point. The reason I posed this idea was because the current vacuum valve (that mounts on the fender) and excess vacuum lines add additional clutter under the hood. An inline manual valve would remove some of the clutter, particularly from the fender after getting a nice, new paint job. It is not about eliminating function, it is about eliminating stuff that covers up nicer looking stuff under the hood. Never said I was going to do it. Just wanted to get the question out there.