Choosing the right pump: electric diaphragm pumps vs other pump technologies

Graco’s Husky electric operated double diaphragm (EODD) pumps offer innovative and unique solutions to age-old issues encountered by businesses using other pump technologies. Through its flexibility and customisable design, it is perfectly suited to an exceptional variety of applications and conditions.

Main drawbacks of traditional pump technologies

Here are some of the most common obstacles users face when working with traditional pump technologies.

• Centrifugal pumps
  Centrifugal pumps are reasonably priced but rather incompatible with many fluids. Their intricate and sensitive design is not suited for abrasives and solids, which will quickly damage the impellers. Since they work at high speed, they tend to shear liquids, so they are not suited to shear-sensitive liquids either. In addition, their design does not allow for much variation in the flow rate. The application, pressure and flow rates need to be very stable for the pump to be efficient.
  
  Are centrifugal pumps getting you frustrated?
  Have a look at The benefits of EODD pumps compared to centrifugal pumps  to explore an alternative solution.

• Magnetic drive pumps
  Although magnetic drive pumps have done away with issues caused by leaking mechanical seals, they can only be used with clean liquids, which makes them unsuitable for applications that involve solids. Furthermore, their magnetic mechanism can cause overheating and even alter the fluid’s composition. The heat generated by the magnets may be high enough to bake constituents of the process liquid into the impeller magnet hub, resulting in build-up of a deposit.
  
  Is the excess heat produced by your magnetic drive pump causing issues? Take a look at Choosing the right pump: magnetic drive pumps vs EODD pumps to find out more about this alternative.

• Rotary lobe pumps
  Rotary lobe pumps require timing gears, which are located in the gearbox. These prevent the lobes from making contact, which is a great feature of this design. However, the gears are an additional piece of equipment that need to be maintained and replaced from time to time. They also lack performance when pumping thin, low viscosity fluids as there are larger clearances between the lobes. The low viscosity fluid makes its way between the lobes, reducing lift and efficiency.
  
  Would you like to find out more about rotary lobe pumps and how they compare to EODD pumps?
  
  Have a look at Rotary lobe pumps vs EODD pumps: pros and cons.

• Gear pumps
  Gear pumps can pump fluids with high viscosity within an impressive temperature range, but they are plagued by high maintenance costs because of their sensitive design and the need for expensive spare parts. Because of their size, gear pumps are unsuitable for operations with large bulk flow rates. They have a clearly defined design envelope outside of which they will have reduced life and ineffective performance.
  
  Are you tired of your gear pumps losing efficiency too soon? Have a look at Choosing the right pump: gear pumps vs EODD pumps  and find your perfect fit.

• Progressive cavity pumps
  Running dry is by far the main reason these pumps fail. Fluid always has to be pumped to lubricate the contacting surfaces between rotor and stator. The progressive cavity pump drive transmits its power to the internal screw through the pump casing using a rotary shaft seal. A mechanical seal is an expensive wear part and sensitive to increased heat, abrasives and non-lubricating liquids, increasing the risk for leakages over time. Furthermore, the mechanical seal raises sanitation concerns and is costly to repair. Finally, the material being pumped can be altered by the rotation and friction of the shaft and seal, further heating the liquid.
  
  Are progressive cavity pumps squeezing your maintenance budget? Have a look at Progressive cavity pumps vs EODD pumps: pros and cons to discover a solution.

• Peristaltic pumps
  While peristaltic pumps are widely used and trusted for a variety of applications, especially for smaller flow rates, users tend to be frustrated at the pumps’ significant footprint and high maintenance costs. The flexible hose used in peristaltic pumps tends to degrade with time, particularly when used with abrasives. Unless the unit is equipped with an expensive leak protection feature, rupture of the hose can cause leaks and lead to hazardous situations. Because of this, hoses need to be replaced frequently.
  
  Frustrated by the high maintenance costs of your peristaltic pumps? Have a look at The benefits of EODD pumps compared to peristaltic pumps and find the perfect pump for your situation.