Replacing Progressive Cavity Pumps with Peristaltic Pumps

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28
MAR
2017

Replacing Progressive Cavity Pumps with Peristaltic Pumps

Category New Products Launch



Progressive cavity pumps are a type of pump that are very resistant to abrasion. There is no metal-metal contact, as is the case with gear or lobe type pumps, nor do they work at high speeds like centrifugal pumps, since they are designed to withstand a certain degree of abrasion.

However, there are applications in which some components wear out and cause problems.

In some applications with highly abrasive products, the life of the stator and the rotor of the progressive cavity pumps is limited, since there is significant friction between the metal rotor and the rubber stator.

In other applications, where the product polymerises or plasticises when in contact with air (for example latex), there could be some sealing problems in the mechanical seals.

Another limitation of progressive cavity pumps is that they are completely unable to run dry. The product being pumped lubricates the friction between the stator and the rotor. If the pump runs dry, the stator is immediately damaged.

A perfect solution for these types of difficult applications is Boyser's industrial peristaltic pump.

The main advantages of Boyser peristaltic pumps compared to progressive cavity pumps are:




  • No moving parts are in contact with the product. This way, the abrasive product does not affect the lifetime of any component. They also work at very low revolutions. The speed range of industrial peristaltic pumps is very low, usually under 50 rpm. Thus, the lifetime of the hose is not at all affected by the abrasive effect of the pumped product, achieving a useful life of the hose that is the same as what is obtained by pumping a non-abrasive product.

  • They don't need mechanical seals. By not having any moving parts in contact with the product, there is no need to use complex sealing systems such as mechanical seals, packing glands or other things, removing the problems associated to these components with some complicated products.

  • They can run dry indefinitely. The product being pumped does not provide any lubrication, so the pump can work indefinitely without product, without any damage being caused.

  • They can prime dry at very high elevations. The suction capacity of peristaltic pumps is very high and they do not need to be flooded to do so.

    ​Thus, Boyser peristaltic pumps are an excellent alternative to progressive cavity pumps for the following applications:

  • Very abrasive products.

  • Products likely to polymerise or plasticise.

  • Pumps that have to run dry or where there is a risk of the product running out.

  • Applications that require high suction levels.  



Related Articles:



- Boyser FMP Peristaltic Pumps with Rollers: Heavy Duty and Reliable



 


Replacing Progressive Cavity Pumps with Peristaltic Pumps
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