what is this hose for?

[mad_planter]

This is on a Ford 250c, roughly equivalent to a 4500 series ford.
This hose runs from the intake manifold to the water pump. At both ends there appears to be spitcocks to open/close it off. I "think" its for a tank style heater, but I want to make sure before I buy one. Running to the intake manifold is kind of throwing me off.

 

[joecdeere]

I agree, that's what it looks like to me too.

I have a 345C which is pretty much the same tractor with a loader and Hoe.
You can see the pipe plug in the water galley in mine where your hose and valve are connected.

 

[mad_planter]

Ah, ok, thanks. That plug is just a pass-through into the water jacket.