Wall-hung lavatories are mounted to the wall with use of wall brackets or can be installed with concealed arm carries that rest behind the wall extending steel arms that then get mounted through the back side of the lavatory fixture.
Counter-top lavatories are installed by either dropping in through the top of a counter/granite top or mounted underneath a counter top
The lowest flow rates in the market today are either 0.5gpm or 0.35gpm, although the standard in most cases is either 1.5 or 1.0gpm.
In order to conform to current ADA standards a faucet handle or level can not require any grabbing, twisting, or pinching in any such way, and also require less than 5lbs of force to turn the unit on or off.
Commercial vitreous or cast iron lavatories can be specified with a “no-over-flow”, this means that in the bowl/basin of the lavatory there is a punching(s) inserted so that if the water reaches a certain level within the fixture it will flow into the punching which are cast and designed to then distribute that excess water back down to the grid drain/p-trap to avoid potential restroom flooding.
The top ledge of the lavatory must be at least 34” from the floor in order to conform to current ADA requirements.
Metering faucets must first be installed/ordered with a 1.0 or less gpm aerator in order to ensure proper cycle time. In most cases metering faucets will cycle for 10-15seconds.
By using a thermostatic mixing valve in combination with a faucet this unit is designed to monitor inlet conditions and hold the outlet temperature constant based on a variable set point from 96o F [36o C] to 120o F [49o C].
Laminar flow outlets distribute water from the faucet without absorbing air first. This give the flow a clear, stream like pattern, and prevents potential bacteria or germs in the air from getting pulled into the water supply as the faucet is distributing water. These outlets are often specified in healthcare and education applications. Aerated flow outlets pull in air and mix with the water as the faucet is dispensing giving a more rigid stream of water.
When dealing with commercial applications its recommended that the project or lavatory be installed with concealed arm carriers which allow for the fixture to withstand more weight/force and thus be more vandal resistant.
What is the difference between quarter-turn faucets and compression style faucets?
Most quarter-turn faucets use a ceramic based cartridge that is designed to open and close with a quarter-turn greatly reducing the amount of twist that occurs on the O rings. A compression style cartridge faucet operates by continually turning the handle to rertact and extend the seal against the bottom of the cartridge bore.