JS Series

Dynapump
JS-Series
We’re Serious About Sealless Performance
Sealless, Leakproof Centrifugal Pumps
Dynapump Canned Motor Pumps
Canned Motor Pumps integrate pumps with motors to
provide an effective sealless, leakproof pumping system
in a highly compact package. The motor windings are
protected from the pumped fluid by a Stainless Steel
containment shell, and O-Rings selected for each
application seal the stationary pressure-containing
joints. A small portion of the pumped flow is circulated
through the motor to lubricate the bearings and cool the
motor. There are no mechanical seals to fail or leak.
Chempump has been building Canned Motor Pumps
since the early 1950’s for a wide variety of Industrial,
Chemical Process and Nuclear applications. The JS
Series is a cost-effective line of Centrifugal Canned
Motor Pumps built on the heritage of our years of
experience and are designed for Industrial applications
where leakage from packing or mechanical seals is to
be avoided.
Dynapump Design Features
1.
Pump casing is provided in investment cast 316
Stainless Steel for corrosion resistance, high
integrity and optimum hydraulic efficiency.
2.
A closed 316 Stainless Steel Impeller provides
hydraulic balance for pump operation with no axial
thrust load.
3.
Stainless Steel band clamp provides positive
sealing of the casing O-Ring yet simple assembly
and disassembly.
4.
Dual-voltage motor winding provides for operation
at both 60 and 50 Hertz frequencies with Class H
insulation suitable for VFD operation.
5.
316L Stainless Steel Stator Liner provides isolation
of the motor winding from the pumped fluid.
6.
316L Rotor Liner protects the underlying rotor iron
from the pumped fluid.
7.
Solid fill provides excellent thermal management of
the motor winding heat, evenly distributing heat to
the stator liner and the external stator band.
8.
Thrust washers provide a “bump” surface to handle
transient axial loads during start-up and abnormal
operation.
9.
Carbon graphite sleeve bearings support the rotor
during operation with a thin layer of fluid. Unlike ball
bearings with a finite life, these bearings will last
indefinitely if the pump is run continuously with clean
liquid.
Dynapump Leakproof, Sealless Pumps
The Dynapump JS Series Centrifugal Canned Motor Pump
is specifically designed to provide leakproof service for
fluid circulation applications. The materials of construction provide the capability of handling a wide range of
coolants, deionized water and other Industrial liquids.
A range of motor sizes is available to match the specific
needs of the hydraulic requirements and the pumped
liquid. Other pump configurations, including the PT
Series, Regenerative Turbine Pumps are also available.
Dynapump Materials of Construction
Casing & Adapter
Impeller & Impeller Nut
Stator Liner
Rotor Shaft
Rotor Liner
Sleeve Bearings
O-Rings
Motor Exterior Band
Motor End Bell
1
316 Stainless Steel
316 Stainless Steel
316L Stainless Steel
316 Stainless Steel
316L Stainless Steel
Carbon Graphite Type B
Viton or EPDM
Carbon Steel, Painted
Die-Cast Aluminum
3
5
6
7
2
8
9
Dynapump JS Series Cross Section
4
Dynapump Performance
110
33
66
80
24
40
12.0
19.5
60
20%
18.0
30%
90
27
54
45%
70
21
40%
4 3/4"
47.5%
4 1/4"
13.5
42
3 3/4"
45%
50
30
3 1/2"
9.0
12
51%
4"
40
20
3 3/4"
7.5
30
9
7.5
24
40%
6.0
45%
3 1/2"
40
12
10.5
TDH (ft)
36
TDH (m)
60
25
4 1/4"
12.0
4"
NPSHr (ft)
15
TDH (ft)
TDH (m)
18
9.0
47.5%
50%
50
15
51%
30
47.5%
4 1/2"
NPSHr (m)
70
21
50%
45%
4 3/4"
60
18
15.0
48
4 1/2"
10.5
20% 30%
40%
47.5%
80
24
35
5"
16.5
NPSHr (m)
5"
NPSHr (ft)
100
30
15
4.5
10
3.0
5
1.5
0
50
0.0
40%
6.0
9
30
6
20
3
10
18
30%
6
20
3
10
30%
4.5
12
NPSH- typical
3.0
NPSH- typical
6
1.5
0
10
20
30
40
0
60
50
0
0.0
0
0
gpm
10
2
4
6
8
10
m /hr
12
55
200
50
0
2
45
5"
44%
100
25
80
24
25
9.0
7.5
20
6.0
15
4.5
5 1/2"
TDH (m)
30
NPSHr (m)
40%
5 1/4"
5 3/4"
100
24
40%
5 1/4"
80
20
5"
44%
18
60
12
40
6
20
46%
18
60
12
40
6
20
0
0
gpm
0
m3/hr
0
10
20
2
4
30
40
6
8
50
10
3.0
5
1.5
36
33
0
60
0.0
0
0
0
gpm
3
12
m /hr
130
120
120
10
0
30%
36
110
2
100
4 3/4"
90
60
3 3/4"
21
18
15
50
50
15
12
40
40
12
9
30
30
9
6
20
20
6
3
10
10
3
NPSH-TYP
0
gpm
0
m3/hr
0.0
20
40
60
80
100
120
140
160
180
200
0
220
0
13.5
18.0
22.5
27.0
31.5
36.0
40.5
45.0
60 Hertz - JSC 3450 Curve
27
24
70
21
55%
60
60%
65%
18
4 1/4"
55%
50
68%
50%
4"
40
15
12
40
9
30
30
9
6
20
20
6
3
10
10
3
3 3/4"
NPSH-TYP
0
gpm
m /hr
9.0
0.0
10
50%
50
15
3
4.5
0
50
4 1/2"
0
0
8
5"
TDH (ft)
70
50%
4"
60
6
60
18
TDH (m)
55%
68%
1.5
40%
24
NPSHr (m)
4 1/4"
70
5
80
70
21
27
80
60%
65%
3.0
5 1/4" 20%
30%
30
NPSHr (ft)
18
TDH (ft)
TDH (m)
21
4
40
80
4 1/2"
80
24
30
4 3/4"
55%
90
27
100
50%
10
90
33
40%
5"
30
20
90
27
39
24
5 1/4" 20%
4.5
50 Hertz - JSB 2880 Curve
130
110
15
NPSH-TYP
60 Hertz - JSB 3450 Curve
39
6.0
46%
10
NPSH-TYP
7.5
10.5
NPSHr (ft)
THD (ft)
TDH (m)
30
9.0
6"
30
35
120
30
6 1/4"
12.0
5 3/4"
5 1/2"
36
10.5
15%
35%
40
6"
140
42
10
35
120
36
35%
160
8
25%
13.5
6 1/4"
48
6
140
42
15.0
6 1/2"
25%
180
4
16.5
15%
6 1/2"
54
40
50 Hertz - JSA 2880 Curve
220
THD (ft)
60
30
0
20
40
60
80
0.0
4.5
9.0
13.5
18.0
100
22.5
120
27.0
140
31.5
160
36.0
49.5
50 Hertz - JSC 2880 Curve
0
180
40.5
12
0
NPSHr (m)
0
60 Hertz - JSA 3450 Curve
66
20
3
NPSHr (ft)
m3/hr
0
NPSHr (m)
gpm
NPSHr (ft)
0