Casing
The casing is split horizontally. The upper and lower halves are held together with capscrews and studs
on the side of each stuffing box to aid in disassembly and reassembly. The casing is supported by inte-
grally cast feet. Separate bearing housings are attached directly to machined fits in each end of the cas-
ing with capscrews.
Fourteen of the 27 casings are double volute as follows:
•
4x6-11
•
4x6-11H
•
6x8-11
•
8x10-21
•
8x10-12
•
8x10-14
•
8x10-17
•
8x10-17H
•
10x12-12
•
•
10x12-14
•
10x12-17
•
10x12-15
•
12x14-14
•
12x14-15
*1
This casing uses a partial splitter.
Flanged suction and discharge connections are located in the lower half of the casing and conform to
ANSI 16.1/16.5 class 125/150. The 125# flat-face flanges are standard with 250# flat-face available as
an option.
DIN flanges may also be provided on all sizes except the 6x8-22. The flanges are provided in accord-
ance with EN 1092-2. These flanges are smooth, flat faced and meet or exceed the minimum thickness
required by the PN rating. The flanges provided are PN16 on smaller sizes and PN10 on the larger sizes.
The casings are standard with the following parts:
•
Two jackscrews (except S group)
•
Two lifting lugs
•
Two tapered dowel pins for alignment
•
One 0.0762 cm 0.030 in. parting gasket
The upper-half casing has a vent connection, a priming connection, and two stuffing box seal ring con-
nections. The lower half has two drain connections.
Impeller
•
Enclosed, double suction
•
Axial hydraulic balance
•
Key driven
•
Dynamically balanced, when the diameter to width ratio is less than six
3.1 General description
20
Model 3410 Installation, Operation, and Maintenance Manual
Содержание GOULDS PUMPS 3410
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