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Q: Why use a peristaltic hose pump instead of a piston or diaphragm pump?

A: RimCraft uses a peristaltic hose pump for it's ability to pump abrasive and corrosive materials. The slurry passages are engineered in such a way as to provide total residual-free cleanouts.  RimCraft Gypsum Spray System peristaltic pumps are:

Sealless Dry-Running Self-Priming to 27'
  Abrasion Resistant Reversible Rotation
Metering Accuracy to ±1%
Integral Conventional Gear Drives

Q: How does a peristaltic hose pump work?

A: Peristaltic pumps work using the process of peristalsis to pump products through a hose, in the same way that blood, food and oxygen are pumped around the body.

  • The hose sits around a rotor which, when turning, compresses a segment of the hose almost flat.
     

  • This compression is released as the rotor moves around the hose with the hose reinforcements causing it to spring back to its round shape, thus creating a partial vacuum refilling the hose.
     

  • This compression creates a seal and, as the rotor turns, any product on the discharge side of the rotor is propelled forward and displaced from the pump.
     

  • Combining this suction and discharge action results in a self-priming positive displacement pump.

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