Specifica tions
10
WBV.PU.003.EN FX116 V1.0
3.1
Material description for rotary lobes
Marking on
the rotary
lobe
Material
Elastomer-based
Resistant
up to
Pump medium
Characteristics
NBR
NBR
Nitrile butadiene
rubber
80 °C *
Sewage sludge,
petrol,
oil, grease, diesel oil,
spindle oil
Oil-resistant
NBR
NBR, white
Nitrile butadiene
rubber
80 °C *
Oil, butter, linseed
and olive oil, lard
Food grade
SBR
SBR
Styrene butadiene
rubber
60 °C
Liquid manure
Wear-resistant
SL
EPDM-SL
(
EPDM-
Sewage-Line)
Ethylene
propylene
diene M-class
rubber
80 °C *
Water, liquid manure,
sewage sludge,
biogas substrate
Not oil and grease
resistant,
water resistant,
steam resistant
AL
EPDM-AL
(
EPDM-Aqua-
Line)
Ethylene
propylene
diene M-class
rubber
80 °C *
Drinking water
Drinking water
approved **,
not oil or grease-
resistant,
water-resistant,
steam-resistant
EPDM
EPDM, white
Ethylene
propylene
diene M-class
rubber
80 °C *
Water, mash, slightly
acidic products
Food grade
PU
PU
(Werobust )
Polyurethane
vulcanised
50 °C
Abrasive medium
Wear-resistant
PUR
PUR
Polyurethane
cast
80 °C
Abrasive medium
Highly wear-resistant
CSM
CSM
(Hypalon)
Chloro-sulfonyl
polyethylene
rubber
80 °C *
Petrol, oil, acids,
alkali solutions
Wear-resistant,
acid-resistant and
alkali-resistant
FPM
FPM
Fluorocarbon
gum
80 °C *
Solvents, salt water,
oil, petrol, acids
Acid-resistant and
alkali-resistant
Steel lobes
(pure material)
1.4571
150 °C
200 °C*
Pure medium
Chemistry
High temperatures,
high chemical
resistance
Steel rotary
lobes
(pure material)
C45 nitrided
150 °C
200 °C*
Pure medium
petrochemical
High temperatures,
chemical resistance
Table: Material description
*
consult Vogelsang in the event of the combination of "high differential pressure and high temperatures"
**
drinking water approvals: KTW, DVGW-Arbeitsblatt, W 270, WRAS, BELAQUA
Please consult us
•
If you require combinations with high differential pressure and high temperatures
– (see * in
Table
"Material description").
•
With solid material lobes with media containing foreign matter
•
If you should discover discrepancies or if precise specifications have not been provided for the
medium
ATTENTION
Risk of premature wear on rotary lobes made of FPM in the event of excess pump pressure!
The material 'FPM' for rotary lobes is usable only up to max. 6 bar differential pressure.
Please see
Chapter
"Specifications".
