Wrench for flush valve seat? not sure of name.

[curegeorg]

I need a wrench (not sure of the name) to tighten this (flush valve seat?) onto a 1pc commercial Kohler toilet. 1 1/2" inlet and you can see that it has 2 brass tabs.

On a residential 1pc toilet the tool is called a flush valve wrench, but it is not the same installation as here i have a nut on top that I can tighten if I could just hold the other piece from spinning.

The flush valve is a Zurn Z6000 WS1, but this part is what the flush valve assmebly threads onto that is installed in the toilet.

The plumbing parts guy says they typically just use a crescent wrench, but I haven't had much luck and this building has quite a few that are leaking/loose.

 

[Shacko]

Thats a toilet spud, I've put in more then I want to remember and I never used a special wrench. What you can do is to get a piece of tubing and cut two notches in it to match the tits inside, then you can use two pairs of channel locks to tighten it down, make sure the threads are clean or put a drop of oil on them, you just want to snug it up, too tight and you could crack the toilet, luck.