Wallingford Plm+Htg
If you can find the fps by just knowing the pressure and pipe size your a better man than I am.You might want to figure in a couple dozen fittings along the way.How about a stop+waste,that may affect the outcome? This problem is common with pressure assisted toilets The first thing I would do is to start closing the valve to the toilets a little at a time until you see results.Your refill rate will be affected but you will probaly find this better than the noise.
