Toilet: can I replace this Mansfield flush valve with a flapper?

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See the white plastic piece in the middle, inner part of Mansfield Flush Valve?? Can I replace with a rubber flapper?
q toilet how to remove this specific flange piece, bathroom ideas, home maintenance repairs, minor home repair, plumbing
  4 answers
  • Bryan's Workshop Bryan's Workshop on Jun 27, 2016
    Hello, that white piece looks like the flush valve. There is a lock nut under this under the tank. Reach under the tank a feel for it. In old toilets, it might feel like it's not supposed to come off or its apart of the pipe, but it's not. It'll unscrew. Good Luck,
    • See 1 previous
    • JimG JimG on Jun 28, 2016
      Yup! afraid that I'd have to remove the tank! I've done that before and being the tank hardware was probably at least 8 years old, the pieces felt like they were WELDED on! what a pain to get them off while being careful not to crack the porcelain (done THAT before too!) easy enough, just takes some time. ** I THINK I could have simply replaced the seal at the bottom of the Flush Valve, before I cracked off a piece of the plastic from the old inner stem.
  • William William on Jun 27, 2016
    Yes you can! You will need to replace the Mansfield flush valve with a new flush valve and flapper assembly. Toilet tank will need to be removed. Unscrew the big nut holding the Mansfield flush valve. Install the new flush valve per instructions. Reinstall the toilet tank. The site is just for pics of the flush valve assembly. You can buy them at Menards, Lowes, or Home Depot. https://www.plumbingsupply.com/mansfield.html
  • Bill Mousseau Bill Mousseau on Jun 28, 2016
    all theses answers are good but be sure to replace tanks bolts and washers and you might need a new tank handle for the new flush valve. also you should put in a new 45b fill valve
    • JimG JimG on Jun 28, 2016
      ok, 45b Fill valve! much thanks. I've replaced the Fill valve in the past, extremely easy for me, and have pulled a tank off and replaced all parts before, to include seals and bolts, but then had to call in a plumber to get it to work right! I'll try again on this toilet just for experience! (I did learn the difference between the FILL Valve and Flush Valve!)
  • JimG JimG on Jun 29, 2016
    ok, was waaaay easier than last attempt on another toilet. (I THINK cause I seated the sponge gasket between the tank and toilet correctly this time!!) all is together with all new parts and bolts and seems to be working well. !! KNOCK wood for me please, before I JINX it!!