OBL X9 Series - Suction Pipeline Path

X9 Series metering pumps Operating manual
Page 16 Copyright © - OBL Metering pumps - All rights reserved File: UT-4336 – Rev.0
GB
6.2.1 Suction pipeline path
The length of the suction pipe must be as short as possible, respecting the dimensions contained in the previous table A.
- for above tank installation (good suction lift required), do not exceed a maximum height of 3 metres
- do not exceed a maximum length of 4 metres (sum of vertical and horizontal sections).
Please refer to figure 5 below for suction pipeline correct arrangement or path.
Figure 5 INCORRECT INSTALLATION CORRECT INSTALLATION
Incorrect
Danger of pump valves
clogging
Correct
5-A
Incorrect
The fluid vein breaks and air
remains trapped in the highest
section of the pipeline
Correct
5-B
Incorrect
The fluid vein breaks and air
remains trapped in the horizontal
section of the pipeline
Correct
Suction pipeline
always uphill
5-C
Incorrect
Internal diameter of suction
pipeline inadequate (see
previous table A)
Correct
Internal diameter of suction
pipeline prop
ortioned (see
previous table A)
5-D
Incorrect
Correct
5-E
Incorrect
Correct
5-F