Keep yourself protected from these acids. Eventually you will either loosen the plunger, or decide it's time to open a wall behind the tub, or bust the tub up and remove the while thing, and start over. The acid may destroy the baloon, but at least you slowed the acid long enough to expost the plunger. Attach the baloon to the dnd of the tube, and inflate the baloon slightly to block the drain, and pour your acid of choice in. Take a baloon, and some aquarium tubing, and a rubber band. One way around that would be to temporarly block the drain. Muratic acid may work as well.īecause it is in a drain, you loose the chemical as fast as you pour it in. It was sold as drain cleaner, and was probably pretty hard on pipes, and people. I haven't seen it is a long time, but I used to see it in the stores in the 1980's.
This is a unrefined acid, in a plastic bottle that feels like it is made of liquid lead, very heavy. Something faster than CLR would be concentrated sulfuric acid drain cleaner. but in general you will have to slowly drip the CLR over the stuck section, which will take a long time. If the tub is blocked, then any CLR you put in the tub will be able to work on the plunger. I'd hate to open a wall, since it backs up to another shower, requiring me to demolish the siding to get access. Is it likely that the plunger, itself, is jammed in there? Or, perhaps it's rusted? I considered throwing some DW-40 down there, or something to see if it might loosen. Unfortunately, the drain opening is not an open drainpipe (it's some kind of closed stopper valve) so I can't try to do anything through there. I don't feel any noticeable sign of give or wiggle. When pulling with a coathanger bent into a hook, it takes me pulling so much that it unbends the hanger without moving. It's almost as if it's lodged or rusted tight.
The issue is that the plunger won't budge. I can see the very top of the plunger's linkage assembly (it must have become detached from the trip lever linkage at some point, and sit's much lower in the drain now) and it has an "O" that I can get a hanger or hook around with some work. I have an older bathtub with a "plunger drain" setup like this:
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