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How to select rotary lobe pumps

How to select and specify rotary lobe pumps

When specifying lobe pumps there are several factors to bear in mind.

  1. Whether the application is sanitary or not. If it is sanitary to what level of certification is required.
  2. Generic considerations such as flow, differential pressure and chemical compatibility.
  3. Viscosity is important with lobe pumps as different designs can cope with differing viscosities. ECP pumps are generally better with higher viscosities.
  4. How shear sensitive is the liquid? A slow running ECP would offer the lowest shear rate when it comes to lobe pumps.
  5. Fluid sensitivity to temperature is another factor to bear in mind with slower running ECP pumps offering the best solution.

Always be cautious when it comes to using a smaller model running at a faster running speed as this could be the most expensive option when you include maintenance costs.

 

Product Series

Type

FDA

EHEDG

3-A

ATEX

Max Flow

Max Pressure

Max Viscosity

Shear

DW

Hygienic lobe pumps

 

350

30

700 cP

Low

Universal 1

Hygienic ECP lobe pumps

102

13

200K cP

Very Low

Universal 2

Hygienic ECP lobe pumps

150

13.8

200K cP

Very Low

Universal 3

Hygienic ECP lobe pumps

102

34.5

200K cP

Very Low

Universal 420/520

Hygienic ECP lobe pumps

 

187

13.8

200K cP

Very Low

LB-S

Rubber lined lobe pumps

 

 

 

 

40 m3/hr

8 bar

100k cP

Low

LB-M

Rubber lined lobe pumps

 

 

 

 

130 m3/hr

10 bar

100k cP

Low

 

How does a rotary lobe pump work. 

How to maintain rotary lobe pumps

Rotary lobe pump fault diagnosis

 

 

PD Pumps Team
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