FK 40 - Tri-Canada

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Mechanical seal selection Elastomers
The t ransf er of hygienic, high quality product s requires a clean pump. Theref ore at t he end of a production process the pumps must be cleaned immediately. The plant needs to be clean and free from germs before starting a new production cycle. Cleaning is the operation to remove all traces of product from the plant. A properly cleaned surface is free from visible, perceptible or chemically detectable dirt deposits (residue). The standard cleaning process for plants is the CIP - (Cleaning in Place). This implies cleaning without dismantling of the plant by means of CIP fluids. In the food industry a CIP process requires the following steps: • preliminary rinsing with water • flushing with alkaline solution • intermediate rinsing with water • flushing with acid • rinsing with clean water To clean the unit efficiently a turbulent flow of the CIP fluid is required. A minimum flow velocity in pipes is usually 2 m/s. Viscous fluids are often transferred by positive displacement pumps at low flow velocities. In order to obtain the flow rate required for CIP it may be necessary to fit an additional cleaning pump such as a centrifugal pump. Frist am pumps are fully CIP capable. They are characterised by: • welded and ground joints • round edges and angles • smooth joining • no narrow gaps and dead legs • O-rings immersed in the pump housing • smooth, nonporous internals with a high surface finish Pump cleaning Cleaning CIP CIP plant cleaning CIP compatible design
Page 2 and 3:
Content Pump technology terms . . .
Page 4 and 5:
Pump technology terms Flow rat e [m
Page 6 and 7:
Pump technology terms Flow behaviou
Page 8 and 9:
Pump technology terms Types of flow
Page 10 and 11:
Pump technology terms NPSH value [m
Page 12 and 13: Loss of head calculation Loss of he
Page 14 and 15: Loss of head calculation Example: F
Page 16 and 17: Centrifugal pumps Feat ures of t he
Page 18 and 19: Centrifugal pumps Correction of the
Page 20 and 21: Centrifugal pumps Pumps connected i
Page 22 and 23: Centrifugal pumps Centrifugal pump
Page 24 and 25: Centrifugal pumps Centrifugal pump
Page 26 and 27: Centrifugal pumps Power consumption
Page 28 and 29: Centrifugal pumps Self- priming cen
Page 30 and 31: Centrifugal pumps Multistage centri
Page 32 and 33: Positive displacement pumps Perform
Page 34 and 35: Positive displacement pumps Selecti
Page 36 and 37: Positive displacement pumps Case 1:
Page 46 and 47: Positive displacement pumps Rotary
Page 58 and 59: Mechanical seal selection Double me
Page 60 and 61: Mechanical seal selection “Face t
Page 64 and 65: Pump cleaning SIP After CIP cleanin
Page 66 and 67: Index Cavitation . . . . . . . . .
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FK 40 - Tri-Canada

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