Suction Pipeline For Viscous Liquids; Filter On Suction Pipeline - OBL X9 Series Operating Manual

Operating manual
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5-G
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5-H
6.2.2

Suction pipeline for viscous liquids

Pumps for dosing viscous liquid must be specifically ordered for that use.
Where possible, we recommend:
use stainless steel pumpheads, otherwise with metallic valves or special material
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maintain the diameter corresponding to pump connections as the minimum diameter of the suction pipe
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As a general rule, always install the pump with suction connection flooded and pay particular attention to the
design, arrangement and path of suction pipeline.
ATTENTION: To select a suitable pump the customer must inform us on the plant NPSH available !
Figure 6 shows some installation examples for viscous liquids.
Figure 6 INCORRECT INSTALLATION
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6-A
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6-B
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6-C
6.2.3

Filter on suction pipeline

To ensure proper pump operation it is important that the product dosed is liquid, homogeneous and clean.
File: UT-4336 – Rev.0 Copyright © - OBL Metering pumps - All rights reserved
X9 Series metering pumps
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Recommended
Recommended
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CORRECT INSTALLATION
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Recommended
GB
Acceptable
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