DISCOVER
×
Loading ...

How do low-flow shower heads work?

Before low-flow shower heads were introduced, the typical shower head provided approximately 6 to 7 gallons of water per minute at a water pressure of 36.3kg. per square inch (psi). The amount of water that comes out of a shower head is directly related to the amount of pressure, or psi, exerting force on it--the greater the psi, the more water will come out.

Loading ...

Low-flow shower heads manage to use less water than older shower heads by restricting the flow of the water while maintaining the water pressure at approximately 80 psi. Most low-flow shower heads on the market today deliver between 3 to 1.5 gallons per minute at the same pressure as older shower heads. Therefore, consumers are able to enjoy the same water pressure as in older models while conserving water.

Many low-flow shower heads also come with a shut-off valve (pushing a button activates the valve) to enable the consumer to save even more water by stopping the flow while soaping or shaving.

Function

Before low-flow shower heads were introduced, the typical shower head provided approximately 6 to 7 gallons of water per minute at a water pressure of 36.3kg. per square inch (psi). The amount of water that comes out of a shower head is directly related to the amount of pressure, or psi, exerting force on it--the greater the psi, the more water will come out.

Low-flow shower heads manage to use less water than older shower heads by restricting the flow of the water while maintaining the water pressure at approximately 80 psi. Most low-flow shower heads on the market today deliver between 3 to 1.5 gallons per minute at the same pressure as older shower heads. Therefore, consumers are able to enjoy the same water pressure as in older models while conserving water.

Many low-flow shower heads also come with a shut-off valve (pushing a button activates the valve) to enable the consumer to save even more water by stopping the flow while soaping or shaving.

Types

Low-flow shower heads can be either aerating or non-aerating shower heads. Both are available as hand-held or fixed models and both feature the same water pressure as in older shower heads, just with less water used.

Consumers favour the aerating, low-flow shower heads, mainly because these shower heads provide a full, even spray when turned on. They are called "aerating" because they work by mixing air into the stream of water, which helps the stream maintain a constant pressure.

Unlike the aerating, low-flow shower heads, the non-aerating, low-flow shower heads do not mix the water flow with air and, because of this, the water pressure fluctuates, resulting in a strong but pulsed flow. Non-aerating, low-flow shower heads keep water hotter than aerating shower heads because the water stream is not cooled by the addition of air.

Importance

Low-flow shower heads are important to consumers in two respects: first, replacing older shower heads with low-flow ones can reduce water and energy bills dramatically; second, the reduction of water consumption is an important step in water conservation and environmental awareness.

A family's water and electricity bill can drop by as much as 50 per cent after installing low-flow shower heads. Less water will be used and, because of that, less energy will be needed to heat the smaller amount of water used.

Loading ...

About the Author

Michelle Kerns writes for a variety of print and online publications and specializes in literature and science topics. She has served as a book columnist since 2008 and is a member of the National Book Critics Circle. Kerns studied English literature and neurology at UC Davis.

Loading ...