Goulds Pumps 3408 - IOM - Manual (Page 9)

GENERAL INFORMATION
PUMP DE SCRIP TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
NAME PLATE IN FOR MA TION . . . . . . . . . . . . . . . . . . . . . . . . . 10
PUMP DESCRIPTION
This product line consists of 39 sizes of double
suction, horizontally split case pumps from size
2 x 3-11 through size 10 x 12-18.
Casing - The casing shall be (close-grained cast iron
for working pressures up to 175 psig), (ductile iron for
working pressures up to 400 psig), and shall be of
axially-split design with suction and discharge flanges
and mounting feet cast integral with the lower half
casing. Tapped and plugged holes shall be provided
for priming, vent drain and gauge connections. Upper
half casing shall be removable without disturbing
suction or discharge piping. Flanges shall be of (125#)
(250#) ASA Standard. Suction and discharge shall be
on a common centerline in both the horizontal and
vertical planes.
Impeller - The impeller shall be of the enclosed
double suction type made of bronze non-overloading
in operating characteristics and statically and
hydraulically balanced. The impeller shall be keyed to
the shaft and positioned axially by the shaft sleeves
which are, in turn, locked in place by shaft nuts. Hub
shall have sufficient metal thickness to allow
machining for installation of impeller rings.
Shaft - The shaft shall be made of (SAE-1045 steel • )
(316 stainless steel • ) (heat treated 416 stainless
steel) of ample size to operate under load with a
minimum of deflection.
Shaft Sleeves - The Shaft Sleeves shall be made of
(bronze) (316 stainless steel) (cast iron) (420
stainless steel, 500 Brinnell) and shall protect the
shaft from wear and from contact with the pumped
liquid. Shaft sleeves shall be locked in place by
threaded, bronze shaft sleeve nuts. An O-ring shall be
furnished under sleeve to prevent leakage.
Stuffing Box Housing / Bearing Brackets - The
Stuffing Box Housing / Bearing Brackets shall be
made of cast iron separate from the casing mounted
in cylindrical fits in the casing. Stuff box/bearing
brackets will be drilled and tapped for drain
connection.
Casing Rings - The casing rings shall be made of
(bronze) (cast iron) (Nitronic 60 stainless steel) and
shall be installed with an anti-rotation device and
designed to restrict leakage across the ring fit.
Bearings - The bearing shall be grease lubricated (oil
optional) ball type, single row inboard, double row
outboard, selected to carry radial and thrust loads.
The outboard bearing shall be retained by bearing
locknut and lockwasher.
Bearing Housings - The bearing housings shall be
bolted to the ends of the bearing bracket/stuffing box
and shall be male-female fitted for a full 360 degrees
to assure positive alignment. The housings shall
provide a fit for the inboard bearing that allows
freedom for thermal expansion while the outboard
bearing shall be clamped in place to take all thrust
loads and keep the rotating element in its proper axial
location. Openings for adding new grease and
draining old grease shall be provided.
Baseplate - The baseplate shall be steel, sufficiently
rigid to support the pump and driver.
Coupling - Coupling shall be of the flexible type.
Coupling hubs shall be secured to the driver and
driven shafts by a setscrew located over the key.
Coupling Guard - The coupling guard shall be the all
metal type.
Rotation - Pump shall have clockwise or
counterclockwise rotation when viewed from its
driven end.
3408 IOM 03/99
9
2
• AISI 4140 Steel is standard on 4 x 6-11, 6 x 8-12M, and 8 x 10-20S & L, 10 x 12-18. 1045 & 316SS are not available for these sizes.