Plumbing Zone - Professional Plumbers Forum banner
1 - 20 of 22 Posts

· Registered
Joined
·
29 Posts
Discussion Starter · #1 ·
Any tips on removing a waterlogged expansion tank? It might sound empty when you tap on it but don't be fooled. FYI - It may be obvious but please make sure they are securely supported. They are quite heavy when full. Where I work it's not uncommon for the tank to be installed hanging from the garage ceiling 10' or higher
 

· Registered
Joined
·
55 Posts
Connect air and blow the water out before you remove it.
Sometimes, the water inside a waterlogged expansion tank has just been sitting in there, almost stagnant. It can be rusty or even black looking. Forcing it back into the piping may cause an issue downstream. I just take them off as is. I know they are heavy, but just get yourself in a position where you are ready for the weight. I guess you could put some tech screws through it and then try to vacuum it out, but that might take a while and would also be awkward.
 

· Premium Member
Joined
·
595 Posts
Sometimes, the water inside a waterlogged expansion tank has just been sitting in there, almost stagnant. It can be rusty or even black looking. Forcing it back into the piping may cause an issue downstream. I just take them off as is. I know they are heavy, but just get yourself in a position where you are ready for the weight. I guess you could put some tech screws through it and then try to vacuum it out, but that might take a while and would also be awkward.
Agree on the water quality, not so much with the removal method.
Nipple down, drill/ vent screw for air so it drains out the water heater drain. Go do something else while it does. After a while drill a second hole below the bladder.
Nipple up, drill and deal with the drainage oh well. Your jobsite may vary.

Connect air and blow the water out before you remove it.
Too many single-use tools unless you're going to use it to set the new one.
 

· Registered
Plumbing
Joined
·
2,329 Posts
Sometimes, the water inside a waterlogged expansion tank has just been sitting in there, almost stagnant. It can be rusty or even black looking. Forcing it back into the piping may cause an issue downstream. I just take them off as is. I know they are heavy, but just get yourself in a position where you are ready for the weight. I guess you could put some tech screws through it and then try to vacuum it out, but that might take a while and would also be awkward.
I’ll just blow it out with air. Terry is pretty lucky. But I typically just Unscrew the tank.

Terry is a pretty big guy at 6’0 and 225lbs so the smaller tanks are no issue.
 

· Premium Member
Joined
·
595 Posts

· I aint CPV see in it?
Plumbing
Joined
·
6,229 Posts
I’ll just blow it out with air. Terry is pretty lucky. But I typically just Unscrew the tank.

Terry is a pretty big guy at 6’0 and 225lbs so the smaller tanks are no issue.
I was gonna say, i mean how much could the little ones way full? 50lbs? maybe?
 

· Registered
Plumbing
Joined
·
85 Posts
Odd....all this talk about expansion tank removal..🤔
I literally just shut off the water, unscrew the old one and flip it so the water doesnt gush out, and replace with new...not rocket science. All that gauges, valves, this, that, is over complicating what is in most instances,not all but most(in my area at least), a useless bladder tank sitting on a w/h that gets swapped out in 5 min.

And a warranty on an expansion tank that matches the water heater?? I guess a mini anode rod would be used🤣 I'll never see a 50 yr old expansion tank, but I've seen a few w/h's that old.
 

· Premium Member
Joined
·
595 Posts
Odd....all this talk about expansion tank removal..🤔
I literally just shut off the water, unscrew the old one and flip it so the water doesnt gush out, and replace with new...not rocket science. All that gauges, valves, this, that, is over complicating what is in most instances,not all but most(in my area at least), a useless bladder tank sitting on a w/h that gets swapped out in 5 min.

And a warranty on an expansion tank that matches the water heater?? I guess a mini anode rod would be used🤣 I'll never see a 50 yr old expansion tank, but I've seen a few w/h's that old.
Whoa. An ANode rod on an expansion tank? Just nerding out over here. No sarcasm, that’sa goodone. I know it’s unrealistic.
However
How many of your customers do you tell that their new water heater might produce thermal expansion for years after the expansion tank is already dead, and they won’t know it. Anyway.
 

· Premium Member
Joined
·
595 Posts
Did you even read my intro? :ROFLMAO:
intros are like resumes. I know they’re there, but I get more info from looking and listening, or in this case reading. Then I’ll check the résumé.

Also, I want to apologize because I wasn’t calling you out. I genuinely wanted your perspective because I’ve looked into getting licensed in Washington. Sorry I should’ve typed different. Ly.
 

· Registered
Joined
·
230 Posts
intros are like resumes. I know they’re there, but I get more info from looking and listening, or in this case reading. Then I’ll check the résumé.

Also, I want to apologize because I wasn’t calling you out. I genuinely wanted your perspective because I’ve looked into getting licensed in Washington. Sorry I should’ve typed different. Ly.
Thought I replied to this but no offence taken and yes im licenced. feel free to ask away.
 
1 - 20 of 22 Posts
Top