How Float Valves are Different from Swing Check Valves

Valves are essential in water supply systems to regulate the flow of water properly and minimise the wastage of water. Depending on the requirement, valves can be used to start/stop the flow of water, control the speed of the water, and direct the flow of water in one direction only. When it comes to the float valves, they are made using a variety of materials, including aluminium, steel, and plastic. Apart from the material, they come in various sizes and specifications. Therefore, one can choose a float valve depending on his/her specific requirement. On the other hand, a swing check valve is differently designed and has a different functioning that allows forward flow and blocks the reverse flow. Have a look at the functioning of these two types of valves to understand the difference.

Functioning of Float Valves

While controlling the amount of water in a tank system, a float valve opens and closes as the water level rises or falls. One of the most common examples of this type of valve is the ballcock, which is found in almost every toilet. It is used to turn off and on the water that’s refilling the cistern. The valve is closed when the ballcock is sitting on top of the water in the tank, whereas the water continues to fill when it’s hanging.

Be it any other kind of float valves, they all serve a similar function like ballcock. Float valves are extensively used in automated filling systems, which find applications in irrigation, animal watering, aquariums, etc. In order to control the flow, these valves notify the system when to start refilling and when to stop. When it comes to the precautions, one should avoid using these valves for high-pressure applications, as these won’t be able to handle a large pressure.

Functioning of Swing Check Valves

Various kinds of check valves are used in a wide range of applications. Usually, these valves are a part of common household items. Available in a number of sizes, these valves are quite simple, small, and inexpensive. A swing check valve allows the flow of water in a single direction and closes automatically if the flow reverses. It is one of the few self-automated valves that don’t need the assistance to open and close thereby making it easier to operate.

It is significant to note that these valves are not designed for extremely tight spaces. One can use these valves for either vertical or horizontal pipe layouts. It is allowed to move freely when a hinged disc assembly is suspended from the body. This type of configuration eases the fluid flow by minimising pressure loss.