Goulds Pumps 3910 11th ed. - IOM - Manual (Page 13)

GENERAL INFORMATION
PUMP DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
NAMEPLATE INFORMATION . . . . . . . . . . . . . . . . . . . . . 14
RECEIVING THE PUMP . . . . . . . . . . . . . . . . . . . . . . . . . 15
Storage Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
PUMP DESCRIPTION
The Model 3910 is a vertical bearing frame in-line
centrifugal pump that meets the requirements of API
Standard 610
11th Edition (ISO 13709).
The model is based on 5 power ends and 27 hydraulic
pump sizes.
Casing - The casing is a vertical in-line mounted design.
The gasket is fully confined. ANSI Class 300 raised face
serrated flanges are standard; ANSI Class 300 flat face
serrated and ring joint flanges are available.
Impeller - The impeller is fully enclosed and key driven by
the shaft. An impeller nut with locking set screw prevents
axial movement.
Seal Chamber Cover - The Model 3910 seal chamber
cover meets API 682 2nd Edition dimensions for improved
performance of mechanical seals.
Power End - Regreasable bearings are standard. The
power end is sealed with labyrinth seals. Pure oil mist
lubrication is optional. Some modifications are required to
convert from grease to oil mist.
Shaft - The standard shaft is machined and ground to
comply with API 610
11th Edition (ISO 13709) criteria.
Bearings - The inboard (radial) bearing carries only radial
load; it is free to float axially in the frame. The outboard
(thrust) bearing is shouldered and locked to the shaft and
retained in the bearing frame to enable it to carry radial and
thrust loads. All fits are precision machined to industry
standards. The inboard bearing is a single row deep groove
ball bearing. The outboard bearing is a duplex angular
contact bearing, which uses a pair of single row angular
contact ball bearings mounted back-to-back.
Motor Support - The fabricated steel motor support is
designed to support the driver and to provide ample access
to both the seal piping and the coupling.
Direction of Rotation - Counterclockwise (left hand) as
viewed from the driver, looking at the pump shaft.
3910-1
1th IOM 5/08
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