Ever-Power Vacuum Pumpss Co.

roots vacuum pumps


Operating Principle and Features:
  The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a constant speed inside the pump housing for suction and exhaust of gas. Two rotors are supported by two bearings and synchronized by a gear, which ensures these two rotors in certain relative positions. They are near to one another and to the housing without actual contacting, so lubrication is unnecessary in the working housing. The carefully balanced operating parts and high precision bevel wheels ensue the pump be operated stably and continuously under the condition of high-pressure difference. Dynamic seal part use our patent technology and imported oil seals, the vibration amount of shaft on the shaft seals is controlled to less than 0.02mm.
  A gravity valve is installed between the suction and exhaust part of the pump. The function of the gravity valve is as follows, when the pressure difference between the suction and exhaust part is over the weight of the valve, the valve opens automatically, which makes the pressure difference always keep in a fixed controllable value, the value is the allowable highest pressure difference to ensure the pump work normally and so that in fact, the roots vacuum pump with overflow valve is a kind of overload self-protective pump.
  Series SYF roots vacuum pump with overflow valve has substantially higher speed at relatively lower inlet pressure and it is possessed overload self-protective function. Because it is a pump of dry clearance seal construction, if a certain pumping speed rate and an ultimate vacuum need to be obtained, it is necessary to supply a lower inlet pressure for reducing the back flow, therefore, a pump must be backed in use, roots vacuum pump should be started soom after its inlet pressure reaches a permissible value for economization.
  It is permit to select different kinds of pump as the backing pump for factual requirements, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing large amount of vapor, the liquid ring vacuum pump is the ideal backing pump.

SYF-150
SYF-300
SYF-600
SYF-1200(Patent Product)

ZJP-1800(Patent Product)
ZJP-2500(Patent Product)
Performance Parameter:
Model
Ultimate Pressure
(Pa)
Pumping Speed
(L/S)
Pressure Diff.at Overflow Valve
(Hpa)
Inlet Diam.
(mm)
Outlet Diam.
(mm)
Motor Power
(Kw)
Recommended Backing Pump
Cooling Water Consumption
(L/min)
Weight
(Kg)
SYF-30
3?0-2
30
52
50
40
0.75
2H-8
/
85
SYF-70
3?0-2
70
52
80
50
1.1
2H-15
/
110
SYF-70D
3?0-2
70
48
100
100
1.5
2H-15
20
220
SYF-150
3?0-2
150
48
100
100
2.2
2H-30
25
220
SYF-300
3?0-2
300
58
150
150
4
2X-70,2H-70
30
310
SYF-600
5?0-2
600
32
200
200
7.5
H-150,HGL-150
35
790
SYF-1200
5?0-2
1200
44
250
200
11
H-150,HGL-150
40
950
ZJP-1800
5?0-2
1800
32
250
250&200
15
2-HG150,ZJP600/HG150
50
1200
ZJP-2500
5?0-2
2500
44
320
320&250 
18.5
2-HG150,ZJP600/HG150
60
1500

 

Series ZJ-150A Roots Vacuum Pumps


Model
Uitimate
Pressure
Pumping
speed(l/s)
Inlet/Outlet Dia(mm)
Max.Permiss able Diff.Pressure
Motor Power(kw)
Recom-ended Backing Pump
Pa
Torr
Pa
Torr
ZJ-150A
5?0-2
3.7?0-4
150
100/100
8?03
75
2.2
2H-30A

 

Series ZJ-300 Roots Vacuum Pumps


Model
Uitimate
Pressure
Pumping
speed(l/s)
Inlet/Outlet Dia(mm)
Max.Permiss able Diff.Pressure
Motor Power(kw)
Recom-ended Backing Pump
Pa
Torr
Pa
Torr
ZJ-300
5?0-2
3.7?0-4
300
150/150
6?03
45
4
2H-70A
1?0-1
8?0-4
H-70B

 

Series ZJ-600 Roots Vacuum Pumps


 
Model
Uitimate
Pressure
Pumping
speed(l/s)
Inlet/Outlet Dia(mm)
Max.Permiss able Diff.Pressure
Motor Power(kw)
Recom-ended Backing Pump
Pa
Torr
Pa
Torr
ZJ-600
5?0-2
3.7?0-4
600
250/150
4.5?03
40
7.5
2H-70A
1?0-1
8?0-4
H-150

 

 

Series ZJ-1200B Roots Vacuum Pumps


Model
Uitimate
Pressure
Pumping
speed(l/s)
Inlet/Outlet Dia(mm)
Max.Permiss able Diff.Pressure
Motor Power(kw)
Recom-ended Backing Pump
Pa
Torr
Pa
Torr
ZJ-1200B
1?0-1
8?0-4
1200
250/200
4?03
30
11
H-150
5?0-2
3.7?0-4
ZJ300/2H-70A

 

Series ZJ-5000 Roots Vacuum Pumps


Model
Uitimate
Pressure
Pumping
speed(l/s)
Inlet/Outlet Dia(mm)
Max.Permiss able Diff.Pressure
Motor Power(kw)
Recom-ended Backing Pump
Pa
Torr
Pa
Torr
ZJ-5000
5?0-2
3.7?0-4
5000
400/320
3?03
22.5
45
ZJ1200/H-300

 

Series ZJ-10000 Roots Vacuum Pumps


Model
Uitimate
Pressure
Pumping
speed(l/s)
Inlet/Outlet Dia(mm)
Max.Permiss able Diff.Pressure
Motor Power(kw)
Recom-ended Backing Pump
Pa
Torr
Pa
Torr
ZJ-10000
5?0-2
3.7?0-4
10000
500/400
2.5?03
19
55
ZJ1200/H-300

 

Series ZJ-20000 Roots Vacuum Pumps


Model
Uitimate
Pressure
Pumping
speed(l/s)
Inlet/Outlet Dia(mm)
Max.Permiss able Diff.Pressure
Motor Power(kw)
Recom-ended Backing Pump
Pa
Torr
Pa
Torr
ZJ-20000
5?0-2
3.7?0-4
20000
630/500
2?03
15
75
ZJ5000/ZJ1200/H-150

 

Series ZJP-30A Roots Vacuum Pumps


Model

Uitimate Pressure

Pumping speed(L/S)

Diff.Permiss at overflow Value

Inlet/Outlet Dia.
(mm)

Motor Power(kw)

Recomm-ended Backing pumps

pa

Torr

pa

Torr

ZJP-30A

5?/span>10-2

3.7?/span>10-4

30

4?/span>103

30

50/40

0.75

2H-8

 

Series ZJP-70A Roots Vacuum Pumps


Model

Uitimate Pressure

Pumping speed(L/S)

Diff.Permiss at overflow Value

Inlet/Outlet Dia.(mm)

Motor Power(Kw)

Recomm-ended Backing pumps

pa

Torr

pa

Torr

ZJP-70A

5?/span>10-2

3.7?/span>10-4

70 

4?/span>103

30

80/50

1.1

2H-15

 

Series ZJP-150 Roots Vacuum Pumps


Moter
Uitimate Pressure
Pumping speed(L/S)
Diff.Permiss at overflow Value
Inlet/Outlet Dia.(mm)
Motor Power(kw)
Recomm-ended Backing pumps
pa
Torr
pa
Torr
ZJP-150
5?0-2
3.7?0-4
150
4?03
30
100/100
2.2
2H-15,2H-30A

 
Series ZJP-300 Roots Vacuum Pumps
 


Model
Uitimate Pressure
Pumping speed(L/S)
Diff.Permiss at overflow Value
Inlet/Outlet Dia.(mm)
Motor Power(kw)
Recomm-ended Backing pumps
pa
Torr
pa
Torr
ZJP-300
5?0-2
3.7?0-4
300
4?03
30
150/150
2H-30A,2H-70A

 
Series ZJP-600 Roots Vacuum Pumps
 


Model
Uitimate Pressure
Pumping speed(L/S)
Diff.Permiss at overflow Value
Inlet/Outlet Dia.
(mm)
Motor Power(kw)
Recomm-ended Backing pumps
pa
Torr
pa
Torr
ZJP-600
5?0-2
3.7?0-4
600
2.7?03
20
200/200
7.5 
2H-70A

 

Series ZJP-1200B Roots Vacuum Pumps

 


 
Model
Uitimate Pressure
Pumping speed(L/S)
Diff.Permiss at overflow Val
Inlet/Outlet Dia.
(mm)
Motor Power(kw)
Recomm-ended Backing pumps
pa
Torr
pa
Torr
ZJP-1200B
5?0-2
3.7?0-4
1200
2.7?03
20
250/200
11
ZJ300/H-70B

 

 

Series ZJP-2500 Roots Vacuum Pumps

 


Model
Uitimate Pressure
Pumping speed(L/S)
Diff.Permiss at overflow Value
Inlet/Outlet Dia.
(mm)
Motor Power(kw)
Recomm-ended Backing pumps
pa
Torr
pa
Torr
ZJP-2500
5?0-2
3.7?0-4
2500
2.7?03
20
320/320
22 
ZJ600/H-150

 


317507 RuoHeng WenLing CityZhejiangprovince China   E-mail: hzptcorp@gmail.com

Tel: 0086-571-28880553  Fax: 0086-571-87048803