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The Advantages And Cautions Of Peristlatic Pump

- Sep 07, 2018 -

Peristaltic pumps are the top choice for high purity systems.  The pump works on the exterior of a flexible piece of tubing.  This means there is a straight flow path for the fluid, it never leaves the tubing, and the fluid contact piece can be cleaned, sterilized, or replaced easily.Peristaltic pumps are the top choice for high purity systems.  The pump works on the exterior of a flexible piece of tubing.  This means there is a straight flow path for the fluid, it never leaves the tubing, and the fluid contact piece can be cleaned, sterilized, or replaced easily.

 

Advantages:

1、Cleanest flow path of any pump – lowest potential for contamination of the fluid and ability to easily change out the tubing for a clean section if needed.

2、Positive displacement pump. Knowing the number of cycles of the pump allows you to know how much fluid has passed.

3、Able to handle high-viscosity fluids

4、Can be self-priming.

5、Many well-developed units are out there with built-in controllers.

6、Flow is easily reversible.

Cautions:

1、Not only can the tubing be replaced, it MUST be replaced on a regular schedule.

2、Worn tubing can crack and leak as well as release particulates into the fluid. If you have a hazardous fluid, assume leaks will eventually happen. Leak detection may be needed.

3、Flow from a standard peristaltic pump has significant pulsation. Different designs are available with higher numbers of rollers, multiple out-of-phase roller sets on parallel tubing, asymmetric roller paths, or pulse dampeners to reduce the pulsation.

4、Be careful with flow sensors and flow switches. The pulsating flow causes problems with many flow sensors.  Monitoring flow from the pump controller counting revolutions is often more reliable than a traditional flow sensor.

 

www.runzefluid.com

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