Product Overview
GENERAL
• Furnish and install
_____
Goulds Water Technology, Model 3885, WE submersible efuent pump(s),
_____
H P,
_____
phase,
_____
volts,
_____
Hz, pump(s) rated for
_____
GPM, at
_____
Ft. Total Dynamic Head.
• Pump(s) shall be Goulds Water Technology, Order No:
____________
.
QUALIFICATIONS
All pump manufacturers must be pre-qualied by the engineer in order to qualify as acceptable manufacturers.
Pre-qualication shall be no later than two (2) weeks prior to published bid date for this project. Failure to pre-qualify
will be grounds for disqualication after the bid opening date. All decisions of qualication shall reside with the engi-
neer of record at time of bidding.
PUMP DESIGN
Pump(s) shall have 2 inch NPT integral vertical discharge and shall be capable of handling efuent containing non-
abrasive ¾ inch maximum solids.
MECHANICAL SHAFT SEALS
The motor shall be protected by a mechanical shaft seal mounted on the pump shaft. The mechanical seal shall be
constructed of silicon carbide vs. silicon carbide sealing faces. The mechanical seal shall be tensioned by a spring con-
structed of series 300 stainless steel metal components and BUNA-N elastomers.
IMPELLER
The impeller shall be semi-open with ejector (pump out) vanes on the top of the impeller for protection of the mechan-
ical seal and hydraulic balance. Due to design, only single plane spin balancing shall be required for smooth operation.
The impeller shall be threaded to the solid series 400 stainless steel shaft. All impellers shall be secured by a thread-
locking feature which will prevent the impeller from loosening during short periods of reverse rotation as might occur
when rotation direction is being veried outside the installation.
CASING
The casing shall be cast from ASTM A48 class 30 gray cast iron of sufcient thickness to withstand 1.5 times the shut off
pressure generated by the largest impeller available for this model in accordance with current revision of the Hydrau-
lic Institute Standards. The discharge connection shall be a standard 2 inch NPT suitable for direct connection to the
station piping, without the use of any external ttings or adapters for vertical orientation of the discharge direction.
Integral feet of cast iron shall be made a part of the casing for accurately positioning the pump suction opening at the
correct elevation off the sump oor for good pump down capability.
MAJOR CASTING MATERIALS
The impeller, casing, bearing/seal housing and motor cover shall be of ASTM A48 Class 30 high quality cast iron for
strength and long life. Bronze impeller shall be cast iron from ASTM B584 UNS C87600 when ordered as an option.
WE Series Model 3885
SUBMERSIBLE EFFLUENT PUMPS
SPECIFICATIONS
3885SPEC R2