Circor IMO A3D Series - Page 3

X X 3D X X X X XXX X
Basic Pump Modifiers
A - Design Modification
B - Carbide Seat Size 312 and Larger
D – Dampening Groove
E – 300 Lb. ANSI Inlet Flange
F – 300 Lb. ANSI Inlet Flange,
Orifices Deleted From Balance
Piston Housing
G – O-Ring Inlet Head
H – Special Discharge Flange
L – Dalic Plated Housing
Pump Modifiers
A – Design Modification
B – One Piece Inboard Cover and
Balance Piston Housing
F – Dampening Groove
G – Design Modification
V – Vertical Mount
Rotation
Blank – CW
D- CCW
P – Short Lead Rotor Size
Rotor Size
106, 118, 137, 156, 250,
275, 337, 350 400
1
st
Letter Designator (Seal Design)
B – Crane Type 21, Buna Fitted, Std. Bearing
C – Crane Type 9, Teflon Fitted, Std. Bearing
F – Standard Packing
H – Crane Type 8, Teflon Fitted,
Hi-Temp Bearing
K – No Seal, Open Bearing
L – Crane Type 2, Std. Bearing
M – Borg BXQW, Buna Standard Bearing
N – Borg Warner Type BX, Viton Fitted
Hi-Temp Bearing
R – Crane S8B5 Seal, Hi-Temp. Bearing
S – Sealol, Viton Fitted, Hi-Temp Bearing
U- Borg Seal, Hi-Temp. Bearing
V – Crane Type 21, Viton Fitted, Std. Bearing
W – Hi-Temperature Packing
Z – Borg Warner Type Q, Viton Fitted,
Hi-Temp. Bearing
4
th
Letter Designator
J – Carbide Seal Seat Silicon
T – Carbide Seal Seat Tungsten
X – Special Material or Const.
3
rd
Letter Designator
C – Circular Mounting Flange
J – Carbide Seal Seat Silicon
N – Nodular Iron Casing
R – Inlet Clamp Ring
S – Steel Casing
T – Carbide Seal Seat Tungsten
U – Stellite Seal Seat
X – Special Material or Const.
2
nd
Letter Designator
C – Circular Mounting Flange
H – Special Mounting Flange
J- Carbide Seal Seat Silicon
M –Circular Mtd. Flange, Nodular Iron Casing
N – Nodular Iron Casing
P – Straight Thru Inlet – 300 Lb. R.F. Flange
R – Straight Thru Inlet – 150 Lb. R.F. Flange
S – Steel Casing
T – Carbide Seal Seat Tungsten
X – Special Material or Construction
Y - Metal Bellows Seal Neoprene
Type 680/BXQ
Series
NOTE: Letter designators following series designator (3D) identify mechanical seal design, construction
and special features. Series designator (3D) is followed by 1, 2, 3 or 4 letter designators.
Examples of determining a particular pump type from letter designators are given below. Table
applies to all designators.
Examples: 3DB (Crane 21 Seal)
3DBC (Crane 21 Seal, Circular Mounting Flange)
3DBCS (Crane 21 Seal, Circular Mounting Flange, Steel Casing)