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Description
21
300407956_002_C1 - 01/2017 - © Leybold
LEYVAC LV
80
140
250
Tolerance
Maximum supply pressure
2 – 7 bar (g)
Nominal flow
15 – 25 °C
25 – 30 °C
3 – 7 Nl/m
5 Nl/m
7 Nl/m
Materials in the cooling circuit of the pump
copper, stainless steel, brass
Purge gas
Allowed purge gas
N
2
/ Ar / dry clean air
Connection
Swagelok 1/4"
Rotor purge gas flow
shaft seal
rotor purge
7 Nl / min
0 – 100 Nl / min
Permissible purge gas supply pressure
4 – 8 bar (g) (0.4 – 0.8 MPa (g))
Permissible purge gas setting pressure
1.5 – 2 bar (g) (0.15 – 0.2 MPa (g))
Optional Gas ballast
(manual or electrical)
Flow (normally ambient air)
80 Nl / min
Fig. 1.9 Dimensional Drawings
C
A
B
H
G
N
P
U
V
W
Fig. 1.10 Dimensions and Exhaust Arrangements
N
Q
S
R
T
R
Modell
A
B
C
G (CC-type)
H
N
P
Q
R
S
T
U
V
W
LV 80
375
320
550
814 (984)
576
266
335
485
410
341
191
265
402
266
LV 140
400
350
567
895 (1065)
597
257
364
514
439
332
182
297
453
285
LV 250
425
375
537
1051 (1224)
570
230
512
662
587
305
155
420
464
285
Dimensions in mm