This is a plastic ball float, commonly used in plumbing systems to control water levels in tanks and cisterns. Here's a breakdown of its purpose and function:
Purpose:
Water Level Regulation:
The primary function of a ball float is to maintain a specific water level within a tank or cistern.
Overflow Prevention:
It prevents overflows by stopping the water inflow once the desired level is reached.
Function:
Ball and Valve:
The float is connected to a valve, often called a ballcock or float valve, via an arm.
Buoyancy:
As the water level rises, the buoyant ball float rises with it.
Valve Closure:
When the float reaches a certain height, it closes the valve, stopping the water supply.
Water Level Drop:
When the water level decreases, the float drops, opening the valve and allowing more water to enter.
Common Applications:
Toilet Cisterns: Used to control the water level for flushing.
Header Tanks: Found in water systems to regulate pressure for hot water.
Loft Tanks: Can be used to fill header and loft tanks.
General Water Tanks: Employed in various water treatment and plumbing applications.
Types of Ball Floats:
Plastic: Often made from durable plastic, like the one in the image.
Copper: Also available in copper for specific applications.
Stainless Steel: Used in more demanding environments.
Additional Information:
Float Valves:
These are often used in conjunction with ball floats to control the flow of water.
Modern Toilets:
Newer toilets often use float-cup/arm style fill valves instead of traditional ballcock systems.
In summary, the plastic ball float is a simple yet effective mechanical device that plays a vital role in maintaining water levels and preventing overflows in various plumbing systems.