Topic: Fluidmaster200

will a fluidmaster 400 fit where a 200 Fluidmaster was fitted

Re: Fluidmaster200

Yes, it will fit fine!

In fact I would recommend replacing any Fluidmaster 200 Fill Valve even if it is working because they are a possible cross connection hazard and under some conditions could allow the water in the toilet tank to backfeed into your potable water supply.