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5 Reasons Why You Need A Diaphragm Pump

By Author: Michael Foley
Total Articles: 16

They sound really technical but there are hundreds hiding in plain sight wherever you go. The diaphragm pump, also called double diaphragm pump, is one of the most frequently used water pumps. These water pumps are one of the most efficient in the industry, offering up to 97% efficiency in real-world conditions. Its efficiency and versatility mean that the diaphragm pump is used in virtually all industries, from food production and agriculture to construction, manufacturing and oil processing. This water pump can also handle fluids with high viscosity levels such as ketchup. Best of all, diaphragm pumps are economical to buy, use and maintain.
The diaphragm pump falls under the umbrella of positive displacement pump alongside the peristaltic pump and rotary pump. However, unlike other positive displacement pumps, diaphragm pumps are powered by compressed air instead of an electric motor. The pump's chamber has two diaphragms, hence the name, with its own inlet and outlet check valves. The two valves work in unison to facilitate fluid flow. The diaphragms are made of soft, durable materials such as Teflon, rubber or other thermosoftening plastics. The two diaphragms also work in conjunction: One diaphragm deflates, lowering the pressure and forcing fluids into the chamber. The diaphragm then re-inflates, increasing the pressure and pushing fluid forward and out. Compressed air is shifted from one chamber to the other, and both diaphragms work in opposite actions.
Not all diaphragm pumps can handle all fluids. The size of the chamber plays a role in the types of fluids it can handle safely and efficiently. By design, and due to the laws of physics, size also affects the pump's flow rate and pressure. For instance, small diaphragm pumps can handle water and other low viscosity fluids, while the largest ones can move maple syrup, oil and the like. The pump's design has also been used in developing artificial human hearts since the mode of action is similar.
The pump's versatility allows it to pump practically most kinds of fluids. One of the most common applications for diaphragm pumps are for transporting water and other low viscosity fluids, but many other industries from all sectors such as construction, mining, manufacturing, petrochemical, pharmaceutical and food production have used the pump for moving all sorts of fluids. If something deals with fluids, then there's a diaphragm pump involved somewhere. Even professional cleaners use diaphragm pumps. 
Here are a few more reasons why you should use a diaphragm pump.
1. Uses no electricity
That's not exactly true, but diaphragm pumps only consume a fraction of the electricity that other water pumps need. Instead, the pump is driven by compressed air action. The absence of electricity and the associated wiring also makes the pump ideal for use in scenarios where electricity makes production or consumption too risky.
2. Simple yet effective
Since diaphragm pumps don't need electricity, there's also no wiring and no setup required. This makes the pump easier to operate and maintain. No need for electrical engineers as well to design electrical systems and install wiring.
3. Allows dry running
Other water pump types such as magnetic drive pumps and centrifugal pumps get damaged or create a lot of problems when they run dry. Meanwhile, not only can a diaphragm pump run dry, it is also self-priming.
4. Can handle rough materials and fluids
The diaphragm pump is made of flexible yet strong materials, and thanks to its durable design, the pump is able to move fluids with rough objects such as slurries and cement mixtures. It can also handle corrosive fluids such as acids. If it's a liquid, it can be pumped by a diaphragm pump.
5. Safe
There's no motor to worry over, no wiring to replace, no seal, no packing, the list goes on. This also means that leaks occur substantially less often unlike other centrifugal pumps. This means that the pump can handle dangerous and toxic fluids without fear of failure or leaking.

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