25 MM Brass Flush Valve is utilized in toilet systems for controlling the water flow from the cistern to the bowl during a flush. It is made utilizing brass, a durable and strong material that is great resistant to damage and corrosion over time. It has a 25mm diameter opening that controls the flow of water, and is ideal to fit flush against the bottom of the cistern for guaranteeing a watertight seal. 25 MM Brass Flush Valve is normally operated by a lever that closes and opens the valve, which allow the water to flow into the bowl and thereafter stop once the flush is complete.