Flush components of flush valve sets control the release of water from the tank into the toilet bowl once the tank/lever handle has been pressed.

Flush valves are mainly used with flush toilets or water closet type toilets. The valve closet has a valve or flap at the exit of the bowl with a water-tight seal to retain a pool of water in the pan. When the toilet is flushed, the valve is opened and the water in the pan flows rapidly out of the bowl into the drains, carrying the waste with it.
There is a bowl siphon that is triggered by a large flow of water into the bowl, which is provided by the flushing mechanism.

Flush valves can be designed into one of the following types:

Concealed type Exposed type Replance attachment

Flush valve sets are made of durable and strong materials. Usually made of chrome plated zinc, brass, bronze and stainless steel.