2
D. PUMP MODEL IDENTIFICATION
This instruction manual covers the Imo CIG mechanical seal double pump design.
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 52 050/32 012 RL I/D/E P/W
Series
Front Pump Frame Size
(2, 3, 4, 5, 6, 8)
Pressure Rating
2 = Single Stage
Nominal Displacement
In CM3/Rev.
Back Pump Frame Size
(2, 3, 4, 5, 6, 8)
Mechanical Seal Version Suffix
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
Pressure Rating
1 = Single Stage (Low Pressure)
2 = Single Stage (High Pressure)
Figure 1 – Double Pump Configuration
Nominal Displacement
In CM3/Rev.
