quietest toilet fill valve

[Mgrant]

What is the quietest toilet fill ,valve a torbeck of a fluidmaster pro400? House at momment has a fluidmaster in but has become very noisy making a humming sound when filling.

 

[JCplumb]

Got a fluidmaster in mine and the loo is next to my bedroom, in the middle of the night I can't hear it filling from my room.
Maybe it needs a clean, follow the instructions here.

 

[tamz]

Torbecks are generally the quietest if you put the correct restrictor in it but if the ballofix is checked back it can increase the noise

 

[Plumbstar Tom]

consider an pressure reducing valve on the incoming main too.

 

[Paulplumb]

I have found a few of those fluidmaster valves "singing". Replacing or removing the restrictorlocated in the valve stem has always solved it for me.

 

[Best]

As above exactly ^^ - I fitted a Fluidmaster Pro valve in a flat with high mains pressure. I obviously used the rubber 'screw' type restrictor and it was perfect for a year or two and then started to make high pitch noise when filling. I noticed when I removed the valve body the stem would still make similar noise when I opened the isolating valve a little (holding my hand above end of stem to stop water going everywhere). I replaced with identical valve to cure it for now.
So has to be the rubber restrictor making the noise and probably more likely on fairly high pressure mains supplies.
Maybe pressure reducing valve on mains would also help.

 

[Phil]

I bin the restrictor, had too many problems. Got a closed back toilet that has one in and every year I have to remove the top half of the valve and shove a knitting needle down the stem and stab the restrictor till its stops humming.