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Old 07-24-2016, 07:51 AM   #1
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Installing new water pressure tank

I have to replace the 2 gallon pressure accumulator tank in the water system. Going to order the same tank but i am thinking about mounting it so it is vertical not horizontal to the water bay floor. Would be just easier to do it this way in terms of draining the tank for winterizing and an occasional flush out. I already have a drain valve installed so need to cut in a new valve.

Has anybody done this mod before ? I will just have to make a bracket mount to hold it vertical.There is plenty of room to do this.

Thanks
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Old 07-24-2016, 09:25 AM   #2
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Haven't done that mod. But our last coach had the tank mounted vertically. Can't think that would be a problem and that it would function better as water is heavy and air bladder would push better.
I haven't seen a pressurize tank in any of the newer coaches. Because of that, hot water heater PT relief valve weeps/leak. My Suburban water heater manual says if PT valve dripping to install a pressure tank to control expansion. Good luck
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Old 07-24-2016, 09:33 AM   #3
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Quote:
Originally Posted by skypilot_1 View Post
Haven't done that mod. But our last coach had the tank mounted vertically. Can't think that would be a problem and that it would function better as water is heavy and air bladder would push better.
I haven't seen a pressurize tank in any of the newer coaches. Because of that, hot water heater PT relief valve weeps/leak. My Suburban water heater manual says if PT valve dripping to install a pressure tank to control expansion. Good luck
Thanks ! I had taken the tank out to drain it since i was re-doing the water system. When i held the tank up to drain it started out as a light brown color which then went to a very dark rusty brown color. I assumed the bladder had failed causing it to leak and then rusting the inside of the tank....hence a new tank is in order. That surprises me they don't have pressure tanks installed anymore....saves the water pump from cycling to much. Maybe they have something else in new technology !!

Chuck
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Old 07-24-2016, 11:00 AM   #4
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I put one in our last coach. It was mounted vertical and worked great! Have thought about doing it to the current coach. Not sure where to mount it yet.
They make a big difference when running the pump for water.
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Old 07-24-2016, 05:32 PM   #5
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The newer method is to use a bypass water pump that doesn't need an accumulator tank. You get to use that space to load up some more junk for the next trip and if I remember correctly, the new pump is about $65.
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Old 07-25-2016, 11:20 AM   #6
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Quote:
Originally Posted by skypilot_1 View Post
Haven't done that mod. But our last coach had the tank mounted vertically. Can't think that would be a problem and that it would function better as water is heavy and air bladder would push better.
I haven't seen a pressurize tank in any of the newer coaches. Because of that, hot water heater PT relief valve weeps/leak. My Suburban water heater manual says if PT valve dripping to install a pressure tank to control expansion. Good luck
From another post i see you were a F4 driver ! I was a crew chief on the F4Ds at Udorn RTAFB during Vietnam. Thanks for your flying experience with the Phantom!!

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Old 07-25-2016, 11:24 AM   #7
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The newer method is to use a bypass water pump that doesn't need an accumulator tank. You get to use that space to load up some more junk for the next trip and if I remember correctly, the new pump is about $65.
I know there was a new pump installed before we bought the coach last year. I will check and see what type it is. I think i would rather have a separate pressure tank.
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