Vacuum liquid-packed ring pump "VVN"

Vacuum liquid-packed ring pumps are intended, depending on the material of flow part, for suction of air (vacuum production), inert or aggressive gases that are water-insoluble for vacuum production or holding. Water is an operating fluid. Area of application: chemical, mining and smelting, coal mining, food, pulp and paper industry, agriculture, construction and medicine. The main advantage of the pumps is easy operating and servicing. They consist of small amount of spare parts. They have no special lubrication system and oil pumps. All clearances between rotating rotor and fixed casing are sealed with operating fluid. Simple design, absence of rubbing pairs in flow part provide pump operational reliability and life time.

Technical Characteristics

 

Pump
model
Feed mЗ/min
Pressure
Water con-
sump-
tion,
l/sec
Power
con- sump-
tion,
l/sec
Rotation speed,
Dimensional pump size without drive, mm
Mass,
kg
Starting, MPa
Final, MPa
VVN-3/0,4
3
0,04
0,1013
0,12
4,85
1500
660x350x
350
105
VVN-A-3/0,4N
3
0,04
0,1013
0,13
4,96
1500
730x435x
410
140
VVN-6/0,4
6
0,04
0,1013
0,2
9,6
1500
780x430x
440
200
VVN-12/0,4
12
0,04
0,1013
0,4
18,4
1000
1250x500x
600
390
VVN1-12TM
12
0,04
0,1013
0,4
18,6
1000
1250x500x
600
300
VVN-25/0,4
25
0,04
0,1013
0,87
37,1
750
1450x680x
720
720
VVN2-50/0,2N
45
0,02
0,1013
1,29
63
600
1605x770x
820
930
VVN1-50TM
50
0,04
0,1013
1,3
70
600
1750x800x
900
920
VVN2-50M
52,5
0,02
0,1013
1,22
70,8
600
1750x850x
900
1350
VVN2-50H
45
0,02
0,1013
1,3
63
600
1750x800x
900
1100
VVN2-50N
45
0,02
0,1013
1,3
63
600
1750x800x
900
1100
VVN1-150N
150
0,04
0,1013
6,6
204
300
2600x1400x
1400
5000
VVN2-150M
150
0,02
0,1013
6,1
180
300
2560x1300x
1400
5850
DVVN-150B
150
0,04
0,1013
11,75
187,5
186
2725x1860x
1850
8200
VVN2-300
340
0,02
0,1013
13,27
401,43
250
3200x1800x
1950
12500

Corresponding Units: M – modernized, B – for paper industry, H – chemically resistant performance; N – pump wet end made of stainless steel, T – of titanium.