Description
GolPumps 5 HP Submersible Well Pump – High-Performance Deep Well Solution (ST 1328)
The GolPumps 5 HP Submersible Well Pump is specifically designed to meet the robust construction and stringent performance requirements of larger wells (4” or more). Featuring an encapsulated-resin filled motor, this pump delivers superior efficiency and durability. Each unit undergoes 100% testing before shipment to ensure optimal operation for both residential and commercial applications.
Key Features & Benefits
- Hermetically Sealed Stator – Anti-track and resin-filled stator prevent motor burnout for long-lasting performance
- High Efficiency – Reduced operational costs and enhanced energy savings
- Durable Copper Wiring – Ensures maximum conductivity and motor longevity
- Pressure Equalizing Diaphragm – Maintains stable performance over time
- Removable Lead Connector – Easy installation and maintenance flexibility
- Thrust Pad Technology – Provides motor stability during continuous operation
- Single-Phase Motor Control Boxes Available – Standard NEMA mounting dimensions for easy integration
Technical Specifications
- Upper Bracket: Cataphoresis-treated cast iron with SS304 stainless steel cover cap
- Max Immersion Depth: 985 ft
- Protection Rating: IP68 (submersible and waterproof)
- Max Starts Per Hour: 20 (at regular intervals)
- Sealing System: Sand slinger and lip seal for enhanced debris protection
- Insulation Class: F
- Rated Ambient Temperature: 86°F with minimum cooling flow of 0.08 m/s
- Installation Position: Vertical or Horizontal
Pump Specifications
- Max Head: 882 ft
- Max Flow Rate: 21 GPM
- Discharge Size: 1 1/4″
- Horsepower: 5 HP
- Pump Material: Noryl for durability and corrosion resistance
- Pump Model: ST 1328
Includes wire splice kit for easy installation.
Ideal For:
- Deep well water pumping for residential, agricultural, and commercial purposes
- Irrigation, livestock watering, and water supply
- Reliable, energy-efficient pumping for long-term performance
Order now for fast shipping and top-quality submersible pumps from GolPumps!
| Model | Pump | ST 13-28 |
| Motor | 4CF6566D | |
| Brand | Gol Pumps | |
| Manufacturer’s Warranty | 1 year Limited Warranty | |
| P2 | kW | 3.7 |
| HP | 5 | |
| Service Factor | 1.15 | |
| Material | Pump | Noryl |
| Motor | Noryl | |
| Voltage – Phase | 230V – Single Phase | |
| Wire | 3 | |
| In | A | 22.9 |
| Imax | A | 26.2 |
| Istart | A | 106.7 |
| PF (%) | Allowable Load | 0.99 |
| Overload Factor | 0.99 | |
| Efficiency (%) | Allowable Load | 69.9 |
| Overload Factor | 69.3 | |
| R.P.M | 3450 | |
| Thrust | N | 6000 |
| Capacitor | UF | No |
| Cable | AWG | 14 |
| Length (ft.) | 8.2 | |
| Production Country | Taiwan | |
Performance Curves
| Pump Model | Motor | Q Capacity 3500RPM | |||||||||
| kW | HP | Gal/Min | 0 | 7.9 | 9.2 | 10.6 | 13.2 | 15.9 | 18.5 | 21.1 | |
| ST 13-28 | 3.7 | 5 | Head (ft.) | 882.5 | 833.3 | 807.1 | 774.3 | 692.3 | 590.6 | 465.9 | 315 |
Dimensions and Weights
| Outlet | Motor Dia. | Dimensions (inch) | Weight (lb) | |||||
| A | B | C | D | Pump | Motor | Pump + Motor | ||
| NPT 1 1/4″ | 4″ | 26.7″ | 1 1/4″ | 3.9″ | 54.4″ | 13.2 | 63.4 | 76.6 |
Part List and Materials
| No. | Part Name | Materials |
| 1 | Discharge Head | AISI 304 |
| 4 | Check Valve Cone | AISI 304 |
| 6 | Check Valve Retaining Ring | AISI 304 |
| 8 | Bearing Spider | Glass Filled Polycarbonate |
| 12 | Diffuser | Glass Filled Polycarbonate |
| 13 | Bowl | AISI 304 |
| 18 | Impeller | Noryl |
| 34 | Strainer | AISI 304 |
| 40 | Pump Shaft / Coupling | AISI 304 |
| 42 | Shaft Sleeve | AISI 304 or Norly |
| 48 | Pump Casing | AISI 304 |
| 52 | Cable Guard | AISI 304 |
| 86 | O-Ring | NBR |
| 92 | Bearing | Polyacetal |
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