Special Versions; Mk2R-Mk2Sr Pumps - Pratissoli MK2 Serie Manual De Uso Y Mantenimiento

17

SPECIAL VERSIONS

The MK2 pump is also available in the following special
versions:
• MK2R (for Recirculated Water)
• MK2SR (for Recirculated Water)
• MK2C (for Methanol)
• MK2SC (for Methanol)
• MK2SH (with AISI 420 head)
The following information is helpful in deciding how to
choose and use these versions.
Unless specified otherwise, observe the above instructions for
the standard MK2 pump.
17.1.3 Technical characteristics
Model
MK2R 40
MK2R 45
MK2R 50
MK2R 55
MK2R 60
MK2R 65
Model
MK2SR 40
MK2SR 45
MK2SR 50
MK2SR 55
MK2SR 60
MK2SR 65
Flow rate
Rpm
l/min
1500 153
1800 149
1500 193
1800 189
1500 239
1800 233
1500 289
1800 282
1500 343
1800 335
1500 403
1800 394
Flow rate
Rpm
l/min
1500 184
1800 183
2200 182
1500 233
1800 232
2200 231
1500 288
1800 286
2200 285
1500 349
1800 346
2200 344
1500 415
1800 412
2200 410
1500 487
1800 484
2200 481
52
17.1

MK2R-MK2SR pumps

17.1.1 Operating instructions
The MK2R/MK2SR series pumps have been designed
to operate in environments with atmospheres that
are not potentially explosive and for using water rich
in particulate, therefore they are considered ideal for
systems with fluid recirculation.
The durability of the piston seals is directly in
relation to the percentage of the presence of solids
in the fluid as regards both their size and their
density.
For a long seal life we recommend a particulate
grain size of no more than 200 micron and 20% max.
in volume.
For more information and a general system layout,
see par. 17.2.6.
17.1.2 Maximum pressure and flow rate
The rated specifications stated in our catalog are the
maximum that can be obtained by the pump. Independently
of the power used, the maximum pressure and rpm indicated
on the specification label can never be exceeded unless prior
formal authorization is given by our Technical or Customer
Service Departments.
Pressure
Gpm bar psi
40.4 400 5800
39.4 400 5800
51.0 300 4350
49.9 300 4350
63.1 250 3625
61.6 250 3625
76.4 200 2900
74.5 200 2900
90.6 170 2465
88.5 170 2465
106.5 150 2175
104.1 150 2175
Pressure
Gpm bar psi
48.6 400 5800
48.3 400 5800
48.1 400 5800
61.6 300 4350
61.3 300 4350
61.0 300 4350
76.1 250 3625
75.6 250 3625
75.3 250 3625
92.2 200 2900
91.4 200 2900
90.9 200 2900
109.6 170 2465
108.9 170 2465
108.3 170 2465
128.7 150 2175
127.9 150 2175
127.1 150 2175
Power
kW HP
159 117
155 114
150 110
147 108
155 114
151 111
150 110
146 107
151 111
148 109
157 115
154 113
Power
kW HP
140.5 191
140 190
139 189
134 182
133 181
132 180
137.5 187
137 186
136 185
133 181
132 180
132 179
135 183
134 182
133 181
140 190
139 189
137.5 187