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OBL MB Series User Manual

OBL MB Series
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2
6
2.1
2.2
80 cm. 70 cm.
0÷15 4x6 - - -
0÷30 6x10 - 1/4"-
0÷125 -
DN 10
3/8" Ø16
0÷155 -
DN 15
1/2" Ø20
1/2" ANSI
0÷260 -
DN 20
3/4" Ø25
3/4" ANSI
0÷420 -
DN 25
1" Ø32
1" ANSI
2
Fig. 7/A
Fig. 6
RIGHTWRONG
FILTER FOOT VALVE
Right
Right
Right
Pipe size according
with table C
Wrong
Risk of clogging of pump valves
Wrong
In the highest point of the piping
the fluid vein breaks
Wrong
Pipe size not according
with table C
A proper installation and sizing of the suction line are of particular importance for a correct operation of the pump, the following
factors shall be taken into account
:
A) Pipe inner diameter
The pipe internal diameter will be chosen according to the pump flow rate (see table C)
.
The pump connections are oversized, in order to cover all applications.
B) Length of the piping
Suction piping is to be as short as possible, following the indications of table C
it is suggested:
- Max suction lift 1,5 metres
- Total length 2,5 metres (upright plus horizontal)
C) Arrangement of the suction line
For the arrangement of the suction line see Fig. 7/A and 7/B.
Table C
Relationship between flow rate and pipe size
FLOW RATE L/h
PIPE WITH
FITTINGS
FLANGED
PIPE
THREADED
PIPE
PVC GLUED
PIPE
SUCTION LINE
ADJUSTMENT SIDE
HYDRAULIC SIDE
ASSEMBLING AREA
Provide with adequate clearance areas and safe access for operation and mainte-
nance, in particular in front of the hydraulic side and of the adjustment knob (fig. 6).
If the pump is installed outdoors, a shelter is recommend, specially when the pump is
equipped with electric actuators or other delicate devices.
PP pump heads can work properly only at ambient temperature and metered liquid
temperatures below 40°C.
If necessary, provide suitable protection from sun rays and check the temperature of
the metered liquid.
INSTRUCTIONS FOR A PROPER INSTALLATION
INSTALLATION
INSTALLATION

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OBL MB Series Specifications

General IconGeneral
BrandOBL
ModelMB Series
CategoryWater Pump
LanguageEnglish

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