The Goulds 3656 is a close-coupled, end-suction centrifugal pump designed for water supply, recirculation, cooling systems, irrigation, liquid transfer, and booster service applications. It is constructed from cast iron, bronze, or a combination of both, and features a Type 21 mechanical seal made of carbon, ceramic, and BUNA materials. This pump includes a back pull-out design allowing maintenance without disconnecting piping. It has a dynamically balanced closed impeller with replaceable wear rings. The connections are typically NPT threaded, with some sizes offering ANSI 125 lb flanges. The 3656 model delivers flow rates up to 550 gallons per minute (approximately 125 cubic meters per hour) and can handle a maximum total head of 280 feet (about 85 meters). It operates at a maximum working pressure of 175 PSIG (around 12 bar) and a temperature rating up to 212°F (100°C), with optional higher temperature capabilities. Motors for this pump are available in NEMA JM or JP frames, single or three-phase, and operate at 1750 or 3500 RPM. The model is ideal for residential, commercial, agricultural, and light industrial water handling applications.
| Specifications |
| Model |
3656 |
| Year: |
2019 |
| S/N: |
7A12H9C0 |
| Made In |
UNITED STATES |
| Condition |
Surplus New |
| Other Specifications |
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Overview:
- Pump Size: 2 1/2 X 3-4
- Applications: Water supply and recirculation for residential, commercial, agricultural, and light industrial sectors.
- Construction: cast iron casing and bronze impeller.
- Back pull-out design allows maintenance without disconnecting piping.
- Maximum flow: up to 550 GPM (approx. 125 m3/h).
- Maximum working pressure: up to 175 PSIG (approx. 12 bar).
- Ideal for irrigation, potable water, HVAC systems, and liquid transfer.
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