This is becasuse of shape of commode. The lower part has a upward bend which does not allow the commode to go empty. Only water which has a prresure can go over the bend and moment the presurre is stopped, the last portion of water can not climb the full bend and therfore remain at the bottm of commode.
Commode / Water closet
22
Install a new fill valve inside the tank. It is easy.
Handicapped ? residential? hospital type with bedpan washing capabilities?
I want to known why i lose water pressure when i flush the commode? I have new fixture inthe comodes.How would i bleed the Bladder tank in the pump house?
The float valve shutting off the water flow.
I think your fill valve is clogged with seddiment.Just replace it.
take the bolts off there should be two bolts on the bottom under plastic caps Turn water off at toilet, flush toilet to empty tank. Two nuts under decorative caps at the pedestal where it meets the floor.. lift toilet off after loosening. There is a wax ring seal that may offer a little lifting resistance.
Sounds like you have a water leak somewhere. It could be from a roof leak, or maybe an upstairs commode, or maybe a water pipe, in your wall, broke.
Drain is partially clogged or the vent pipe is stopped up. Also check the vent holes underneath the rim of the toilet and clean them out.
Clogged toilet, mainline stoppage, not enough water in the tank or bowl, too much slack in flapper chain, bad flapper, broken handle...
You will have a shut off for the commode and each sink. The only way to turn the supply to the shower is to turn off the supply to the entire home.