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Old 10-06-2017, 10:30 PM   #1
Johnny's Journey
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Is it a Western thing that.....

Is it a Western (edition) thing that my water heater does not have the typical 3 valve set up for winterizing? Or did the manufacture get conservative by only installing 1 three way valve on the cold water feed to the tank and bypass tube? Or is it a safety of sorts so the tank can not go or stay dry due to human error that could occur with a 3 valve set up?
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Old 10-07-2017, 02:26 AM   #2
chuckster57
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Most likely a money thing. Keystone isn’t the only that does it this way too.
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Old 10-07-2017, 04:16 AM   #3
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Easy to re-plumb, took me about an hour, 1 lime and 3 Dos XX.

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Old 10-07-2017, 04:49 AM   #4
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Easy to re-plumb, took me about an hour, 1 lime and 3 Dos XX.

Javi
Why, the single valve works just fine. We FT and I wanted to check the WH anode, switched to bypass and opened the relief valve then removed anode. All was good so reinstalled and closed relief valve, and opened a hot faucet and moved the one valve back to normal.
I turned off the breaker for electric before starting.
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Old 10-07-2017, 04:56 AM   #5
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Why, the single valve works just fine. We FT and I wanted to check the WH anode, switched to bypass and opened the relief valve then removed anode. All was good so reinstalled and closed relief valve, and opened a hot faucet and moved the one valve back to normal.
I turned off the breaker for electric before starting.
Yep it works but I prefer not to get that cold blast of unheated water every time.

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Old 10-07-2017, 05:09 AM   #6
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Yep it works but I prefer not to get that cold blast of unheated water every time.

Javi
????
Don't see how it changes that, I don't even get that in the shower.
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Old 10-07-2017, 05:18 AM   #7
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????
Don't see how it changes that, I don't even get that in the shower.
Okay

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Old 10-07-2017, 05:31 AM   #8
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Go look at the system... see where the valve is... Now look at where the bypass is... see the cold water getting mixed with the hot. Why, would you want that..

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Old 10-07-2017, 06:55 AM   #9
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Go look at the system... see where the valve is... Now look at where the bypass is... see the cold water getting mixed with the hot. Why, would you want that..

Javi
No I don't.
Valve on cold water inlet is either in bypass or feeding the HW tank. There is a one way check valve on the Hot outlet hot comes out, no backfeed into the tank. This is what isolates the tank when the cold water valve is in bypass.
The only way to mix cold is if the bypass isn't fully in the feed the HW tank position, the same can happen with the three valve arrangement.
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Old 10-07-2017, 08:04 AM   #10
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Rhagfo is absolutely correct.
A one way check valve on the exit side of the hot water heater. This keeps anti freeze from going back into the heater. The three way valve is all you need.
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Old 10-07-2017, 08:21 AM   #11
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Easy to re-plumb, took me about an hour, 1 lime and 3 Dos XX.
I'm not allowed to talk about stuff like that. It's kind of like the professor you mentioned on another thread not allowing you to us a calculator. It's called control.
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Old 10-07-2017, 08:21 AM   #12
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The single valve on my last two trailers was an on or off valve and was located between the tank and the bypass pipe from the cold line to the hot line. And yes there is a one way valve on the hot side in the tank... however there was no valve in the by pass and nothing to prevent siphoning of cold to hot.

If yours is configured differently then I can't tell you how much I envy you..

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Old 10-07-2017, 08:29 AM   #13
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Why, the single valve works just fine.
Not at all. It can not do what a 3 valve set is suppose to do. How does one keep extra winterizing fluid from entering via the by pass so a truly empty tank can be achieved? Granted it will stop once thing come to a pressured state in the tank and fluid will no longer enter.
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Old 10-07-2017, 08:32 AM   #14
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And yes there is a one way valve on the hot side in the tank... Javi
Lucky you. They didn't spare the extra dime to but that on mine.
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Old 10-07-2017, 08:46 AM   #15
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Lucky you. They didn't spare the extra dime to but that on mine.
I left it there but installed an on/off in the bypass and in the hot side between the tank and bypass..

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Old 10-07-2017, 01:27 PM   #16
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Not at all. It can not do what a 3 valve set is suppose to do. How does one keep extra winterizing fluid from entering via the by pass so a truly empty tank can be achieved? Granted it will stop once thing come to a pressured state in the tank and fluid will no longer enter.
There is a one way fitting/valve on the hot outlet to stop backflow into the tank.
I actually just checked the anode in my Hot Water tank by moving the single bypass valve to the bypass position and opening the relief valve on the HW tank then removing the anode rod and draining the tank. There was no flow out of the tank once drained. This was while actively connected to city water!
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Old 10-07-2017, 01:34 PM   #17
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Here are the three standard HW bypass systems.

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None of them need a third valve to completely isolate the tank so that it can be drained dry. Before you reply otherwise, I suggest you trace and retrace the water flow in each of them when in the winterize position.
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Old 10-07-2017, 01:37 PM   #18
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Lucky you. They didn't spare the extra dime to but that on mine.
look closely at the "Hot line" right where it exits the heater tank. There is a 1" fitting if you look close at it you might see an arrow pointing away from the tank. it is in line and has no physical features like a valve handle or anything you need to do. This is a check valve. No human interaction required. All you need to do is move the three way switch to "bypass" and that's it. Put in your winterizer.
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Old 10-07-2017, 01:48 PM   #19
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My question has to be.... Why does it bother y'all so much... there is no empirical evidence to support an argument that having three valves is a bad thing... unless they are installed incorrectly, which would be pretty obvious.

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Old 10-07-2017, 01:55 PM   #20
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I would bet the biggest concern isn't how many valves at all but to be sure anti-freeze stays out of the HWH.
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