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Diaphragm Pumps: How Do They Work and What Are They Used For?

Diaphragm pumps are a type of positive displacement pump that uses a flexible diaphragm to move fluids. The diaphragm is alternately moved in and out of a chamber, creating a vacuum that draws in fluid and then a pressure that pushes the fluid out. Diaphragm pumps are versatile and can be used to pump a variety of fluids, including water, chemicals, and food products. They are also resistant to wear and tear, making them a reliable option for many applications.

How Do Diaphragm Pumps Work?

The basic principle of a diaphragm pump is as follows:

  1. A flexible diaphragm is located inside a chamber.
  2. A piston or other actuator alternately moves the diaphragm in and out of the chamber.
  3. When the diaphragm moves in, it creates a vacuum that draws in fluid.
  4. When the diaphragm moves out, it creates a pressure that pushes the fluid out.

The type of actuator that moves the diaphragm can vary depending on the design of the pump. Some common actuators include:

  • Electric motors
  • Pneumatic actuators
  • Hydraulic actuators

Air operated diaphragm pumps from Price Pumps

There are two main types of diaphragm pumps, the mechanically driven pump, and the air-operated diaphragm (AOD) pump. Price Pumps manufactures a variety of AOD pumps, including the AOD1.5 model. With this type of pump, compressed air is used to power a linked shaft that shuttles air between chambers. This causes the chambers to move in tandem, displacing liquid from one chamber into the discharge piping while simultaneously filling the other chamber with liquid. 

Mechanically driven diaphragm pumps are powered by a variety of means, including electric motors, gear trains, and pneumatic actuators. The piston or plunger is driven by mechanical means, creating a reciprocating motion of the diaphragm. This back-and-forth movement creates a vacuum in the pump chamber, drawing fluid in through the inlet port. The fluid is then forced out of the pump chamber through the outlet port as the diaphragm moves outward. This process repeats itself, pumping fluid out of the pump chamber and into the discharge line.

What Are Diaphragm Pumps Used For?

Diaphragm pumps are used in a wide variety of applications, including chemical processing, food and beverage processing, pharmaceutical manufacturing, water treatment, oil and gas production, painting and coating, and industrial cleaning.

Buy Diaphragm Pumps from Chemical Containers

Chemical Containers is a leading supplier of diaphragm pumps including from Price Pumps and other fluid handling equipment. We offer a wide selection of Price pumps to meet your needs. We also have a team of experienced engineers who can help you select the right pump for your application.

To learn more about diaphragm pumps or to buy a Price pump, please contact Chemical Containers today.

Call us at (800) 555-1212 or explore the diaphragm pump shop on our website.