Catalogues - sf-pump-care-suction-filters

Catalogue SF - PUMP CARE - suction filters

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"PUMP CARE"

SUCTION FILTERS

PRESSURE DROP (Ap) CURVES

The "Assembly Pressure Drop (Ap)" is obtained by adding the pressure drop values of the filter housing and of the Clean Filter Element corresponding to the

considered Flow Rate and it must be lower than 3 kPa (0,03 bar).

FILTER HOUSING PRESSURE DROP

(mainly depending on the port size)

ap (bar) 0,04

0,03 0,02 0,01

—r

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0 25 50 75 100 125 150 l/min

CLEAN FILTER ELEMENT PRESSURE DROP

(depending both on the internal diameter of the element and on the filter media)

ap (bar) 0,04

0,03 0,02 0,01

ap (kPa)

ap (bar)

0,04 0,03 0,02 0,01

ap (kPa) 4

ESE 11

ESE 12

FSF3+ and FSF4+ industrial filters use double element canisters. The Assembly Pres-sure Drop is therefore determined by adding the Housing Pressure Drop at the real flow rate and half the pressure drop of the ESF2+ element. e.g. The pressure drop of a complete FSF31-----FC-- filter at a 60 l/min flow rate is obtained by adding the Housing Pressure Drop and half the ESF21NFC element pressure drop at 60 l/min.

0 10 20 30 40 50 60 l/min

0 10 20 30 40 50 60

l/min

ap (bar) 0,04

0,03 0,02 0,01

^a^p ^(kPa) ESE 21

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ap (bar)

0,04 0,03 0,02 0,01

ap (kPa) 4

ESE 22

25 50 75 100 125 150

l/min

N.B. All the curves have been obtained with mineral oil having a kinematic viscosity 30 cSt and specific gravity 0,9; for fluids with different features, please consider the factors described in the first part of this catalogue.

BYPASS VALVE PRESSURE DROP

When selecting the filter size, these curves must be taken into account if it is foreseen that any flow peak is to be absorbed by the bypass valve, it also must

be of proper configuration to avoid pressure peaks. The valve pressure drop is directly proportional to fluid specific gravity.

ap (bar) 0,8

0,6 0,4 0,2

ap (kPa) 80

0 15 30 45 60 75 90 l/min

N.B. All the curves are obtained from test done at the UFI HYDRAULIC DIVISION Laboratory, according to the specification ISO 3968. In case of discrepancy, please check the contamination level, viscosity and features of the fluid in use.