https://www.gouldspumps.com/en-US/Tools-and-Resources/Literature/
or from your local ITT Goulds Pumps Sales representative.
All pumping unit (pump, seal, coupling, motor and pump accessories) certified for use in an Ex classified
environment, are identified by an Ex tag secured to the pump or the on which it is mounted. A typical tag
would look like this:
If applicable, your pump may have either a CE Ex (ATEX) tag or UKCA Ex tag affixed to the pump. See
the Safety section for a description of the symbols and codes. Typical nameplate only shown below, the
actual area classification may be different.
Figure 1: Typical Ex pump nameplate
Table 2: Temperature class definitions
Code Maximum permissible
pumpage temperature in °C | °F
Minimum permissible pumpage temperature in °C | °F
T1
450 | 842
372 | 700
T2
300 | 572
277 | 530
T3
200 | 392
177 | 350
T4
135 | 275
113 | 235
T5
100 | 212
Option not available
T6
85 | 185
Option not available
The code classification marked on the equipment must be in accordance with the specified area where
the equipment will be installed. If it is not, do not operate the equipment and contact your ITT Goulds
Pumps sales representative before proceeding.
II = Group 2
G/D = Gas and Dust present
T4 = Temperature class, can be T1 to T6 (see Table)
The code classification marked on the equipment must be in accordance with the specified area where
the equipment will be installed. If it is not, do not operate the equipment and contact your ITT Goulds
Pumps sales representative before proceeding.
1.6 Parts
The use of genuine Goulds parts will provide the safest and most
reliable operation of your pump. ITT Goulds Pumps ISO certifica-
tion and quality control procedures ensure the parts are manufac-
tured to the highest quality and safety levels.
Please contact your local Goulds representative for details on
genuine Goulds parts.
1.6 Parts
Model 3935 Installation, Operation and Maintenance Instructions
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