Pfeiffer DUO 3 - Technical Data and Dimensions; General; Substances in Contact with Media

14 Technical data and dimensions
14.1 General
Basis for the technical data of Pfeiffer Vacuum rotary vane pumps:
●
Specifications according to PNEUROP committee PN5
●
ISO 21360-1: 2016: “Vacuum technology - Standard methods for measuring vacuum-pump per-
formance - Part 1: General description”
●
Leak test to ascertain the integral leakage rate according to EN 1779: 1999 technique A1; with
20 % helium concentration, 10 s measurement duration
●
Sound pressure level according to ISO 3744, class 2
mbar bar Pa hPa kPa Torr | mm Hg
mbar 1
1 · 10
-3
100 1 0.1 0.75
bar 1000 1
1 · 10
5
1000 100 750
Pa 0.01
1 · 10
-5
1 0.01
1 · 10
-3
7.5 · 10
-3
hPa 1
1 · 10
-3
100 1 0.1 0.75
kPa 10 0.01 1000 10 1 7.5
Torr | mm Hg 1.33
1.33 · 10
-3
133.32 1.33 0.133 1
1 Pa = 1 N/m
2
Tbl. 11: Conversion table: Pressure units
mbar l/s
Pa m
3
/s
sccm Torr l/s
atm cm
3
/s
mbar l/s 1 0.1 59.2 0.75 0.987
Pa m
3
/s
10 1 592 7.5 9.87
sccm
1.69 · 10
-2
1.69 · 10
-3
1
1.27 · 10
-2
1.67 · 10
-2
Torr l/s 1.33 0.133 78.9 1 1.32
atm cm
3
/s
1.01 0.101 59.8 0.76 1
Tbl. 12: Conversion table: Units for gas throughput
14.2 Substances in contact with media
Pump parts Substances in contact with media
Standard M version MC version
Housing Aluminum Aluminum Aluminum
Inlet/exhaust flange Stainless steel Stainless steel Stainless steel
Sight glass Float glass Float glass Float glass
Stator/stator flange Cast iron Cast iron Cast iron
Rotor Cast iron (nodular
graphite cast iron)
Cast iron (nodular graph-
ite cast iron)
Cast iron (nodular
graphite cast iron)
Coupling system Steel - -
Magnetic coupling - Steel, nickel-coated
magnets
Steel, nickel-coated
magnets
Vane Artificial resin com-
pound, polymer
Artificial resin compound,
polymer
Composite material, pol-
ymer
Exhaust valve Stainless steel Stainless steel Stainless steel
Vacuum safety
valve
Aluminum, FKM, steel Aluminum, FKM, steel Aluminum, FKM, steel
Screws Galvanized steel,
stainless steel
Galvanized steel, stain-
less steel
Galvanized steel, stain-
less steel
Seals FKM FKM FKM
Technical data and dimensions
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