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Goulds Water Technology Pump Models 3657 / 3757 are designed for multiple application and have several fetures and benefits.

• Superior Materials of Constructions: Precision investment cast 316 stainless steel liquid end components for corrosion resistance and strength.
• Frame Mounted Design: Flexibility of installation and driver arrangements.
• Enclosed Impeller Design: Maximum efficiency and service life with no need for clearance adjustment. Key driven shaft connection with locknut.
• Back Pull-Out Design: Simplifies maintenance by allowing the casing to remain in the piping during disassembly.
• Close-Coupled Design: Compact design saves space and simplifies installation.
• Casing features: Investment cast AISI type 316 stainless steel, volute design for maximum efficiency. Vertical discharge standard, field modifiable to four standard positions.
• Shaft and Sleeve: High strength steel, keyed design non-wetted. Protected from pumpage by O-ring seal and hooked design AISI type 316 stainless steel shaft sleeve.
• Mechanical Seals: Standard John Crane Type 21 seal with carbon versus ceramic faces, Viton elastomers and 316 stainless steel metal components. Options are available for high temperature and mild abrasives.
• Drive Motors: NEMA standard JM frame (close coupled) or T frame (frame mounted) are available in both single and three phase with a variety of enclosures and voltages to match your service requirements.

3657 / 3757 Gould Pump Models have an Enclosed Impeller and are 316 Stainless Steel End Suction Centrifugal Pumps

Motor (Close Coupled): NEMA standard JM shaft extension from 1 to 10 HP at 3450 RPM and 1 to 5 HP at 1750 RPM. Single phase motors are 115/208–230 V. Three phase motors are 208–230/460 V. Enclosures available are ODP (1.15 SF), TEFC and Explosion Proof (1.0 SF) and High Efficiency TEFC (1.25 SF). Other enclosures, voltages and hertz configurations are available, consult the factory.

Motor (Frame Mounted): Optional 143T through 215T frame motors are available in ODP, TEFC and Explosion Proof enclosures. Motors are NEMA standard T frame design. Single phase units are 115/208–230 V. Three phase units are 208–230/460 V. Other enclosures, voltages and hertz configurations are available, consult the factory.

Overload protection must be provided. Contactor with overload for single phase and starter with heaters for three phase must be ordered separately.