Water heater by pass question

Question

This is a shot of my water heater and the by passes on a 2014 Coachmen Freedom Express. Should there be another cut off at the top, on the hot water out pipe? I understand the cutoff for the cold water in at the bottom, and open the cut off in the middle to allow the antifreeze to go up, but what keeps the antifreeze from going into the water heater at the top?

Someone on another forum suggested that on newer models, this is a check valve/back flow piece? Another said it appears to be a cut off with the handle missing? Any ideas?

newman_fulltime · Answer

its a valve with the handle missingeasy way to find out close the valves as you winterize then if no water goes into the tank its a checkvalve it bit does go in the tank its a valve

n7bsn · Answer

newman fulltimer wrote:its a valve with the handle missingOr it's a one-way check valve

darsben · Answer

n7bsn wrote:newman fulltimer wrote:its a valve with the handle missingOr it's a one-way check valveMost likely answer.MY rig has only one bypass valve and a check valve

opnspaces · Answer

If it's a missing handle the shaft that is sticking down would have a threaded hole in the center.
Try removing the handle form a different valve and see if it can slide on and turn the part in question.

old-biscuit · Answer

Check valves are in nipple that is screwed into tank.

What you have is a missing valve handle. Compare it to the other 2 valve bodies...same design.

Use a pair of pliers or a small crescent wrench on that flat portion and turn it 1/4 turn to close valve (flat portion would be across line in closed position--------right now flat portion is parallel with line and valve is open)

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Water heater by pass question

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