This manual provides installation, operation and maintenance instructions for the Goulds 3657/3757 centrifugal pumps.
This manual provides comprehensive guidance for the installation, operation, and maintenance of Goulds Models 3657 (close-coupled) and 3757 (frame-mounted) single-stage end-suction pumps. These pumps are designed for ultra-pure water systems, OEM applications, food and beverage processing, and chemical services not demanding ANSI standard equipment.
| Impeller Material | AISI TYPE 316 stainless steel |
|---|---|
| Casing Material | AISI TYPE 316 stainless steel |
| Shaft Sealing | Mechanical seal |
| Maximum Liquid Temperature | 212°F (100°C) |
| Maximum Liquid Temperature (Optional) | 250°F (120°C) |
The standard seal supports 212°F (100°C), while an optional high temperature seal supports 250°F (120°C).
No, close-coupled units do not require field alignment.
No, the suction isolation valve should not be used to throttle the pump.