2
D. PUMP MODEL IDENTIFICATION
This instruction manual covers the Imo CIG double pumps with lip seals.
The model of each pump is identified on the pump nameplate.
Refer to Figure 1 for instructional keys when using this manual.
Double Pump Model Key
CIG 52 050/33 012 RL I/D/E P/W
Series
Front Pump Frame Size
(2, 3, 4, 5, 6, 8)
Pressure Rating
1 = Single Stage (Low Pressure)
2 = Single Stage (High Pressure)
3 = 2 Stages
4 = 3 Stages
Nominal Displacement
In CM3/Rev.
Back Pump Frame Size
(2, 3, 4, 5, 6, 8)
P – Petroleum Base Fluids (Standard)
W – Low Viscosity Fluids Modification
I – Internal Drain Standard)
D – External Drain For High Suction Pressure
E – External Drain For Low Viscosity
and Normal Suction Pressure
R – CW Rotation (Standard)
L – CCW Rotation
Nominal Displacement
In CM3/Rev.
Pressure Rating
1 = Single Stage (Low Pressure)
2 = Single Stage (High Pressure)
3 = 2 Stages
4 = 3 Stages
Figure 1 – Double Pump Configuration
