Product Overview

GENERAL

• Furnish and install _____ Goulds Water Technology, Model 3886, submersible sewage pump(s), _____ HP, _____

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-qualied by the engineer in order to qualify as acceptable manufacturers. Pre-

qualication shall be no later than two (2) weeks prior to published bid date for this project. Failure to pre-qualify will

be grounds for disqualication after the bid opening date. All decisions of qualication shall reside with the engineer

of record at time of bidding.

PUMP DESIGN

Pump(s) shall have 2 inch NPT integral vertical discharge and shall be capable of handling sewage containing non-

abrasive 2 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 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 lower

mechanical 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 veried outside the installation.

CASING

The casing shall be cast from ASTM A48 class 30 gray cast iron of sufcient 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.

SPECIFICATIONS

3886SPEC R2

B Series

Model 3886

SUBMERSIBLE SEWAGE PUMPS

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SPECIFICATIONS 3886SPEC R2 WS_B Series Model 3886 SUBMERSIBLE SEWAGE PUMPS GENERAL • Furnish and install _____ Goulds Water Technology, Model 3886, submersible sewage pump(s), _____ HP, _____ 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-qualified by the engineer in order to qualify as acceptable manufacturers.
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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. CORROSION PROTECTION The pump/motor shaft wetted-end shall be 316SS extension fusion welded to motor shaft of carbon steel. Both inner and outer surfaces of cast iron shall be electrocoat-painted with thermo-setting Acrylic Enamel baked at 400º F.