Product Description
The V-Flow Pump NV45-4S is a high-efficiency, four-stage vertical booster pump designed for industrial, commercial, and agricultural applications. Its vertical, in-line design saves space while delivering reliable performance in demanding environments.
Motor Options
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Single-Phase Motor
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Ideal for locations without three-phase power
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Same flow (up to 45 GPM) and pressure (up to 232 PSI) as three-phase models
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Slightly lower electrical efficiency and better suited for lighter duty cycles
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Three-Phase Motor
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Standard for commercial and industrial sites
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Higher electrical efficiency and smoother continuous operation
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This pump is well-suited for reverse osmosis, washing systems, water treatment, power plants, boiler systems, water boosting, irrigation systems, sprinkler systems, and hot and cold water circulation.
The V-Flow Pump NV45-4S combines precision engineering and dependable performance, making it a trusted choice for a wide range of water handling needs.
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V-Flow Pump NV45-4S
Vertical Multistage Booster Pump – 304 Stainless Steel
Technical Specifications
| Rated Flow | 45 GPM |
| Stages | 4 |
| Max Working Pressure | 232 PSI |
| Max Inlet Pressure | 118 PSI |
| Motor Power | 3 HP |
| Motor Phase / Frequency | 1PH or 3PH / 60Hz |
| Motor Frame | 182TC |
| Motor Enclosure | T – TEFC |
| Pump Length (Flanged) | 18.35 in |
| Weight (Flanged) | 87 lbs |
Construction Materials
| Wetted Components | 304 Stainless Steel |
| O-Rings | EPDM |
| Mechanical Seal | Silicon Carbide/Silicon Carbide/EPDM |
| Motor Bracket & Base Plate | Cast Iron |
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Construction & Design Features (304 Stainless Steel Model)
| Component | Material (304 SS Models) |
|---|---|
| Motor Bracket | Cast Iron |
| Pump Head | 304 Stainless Steel |
| Impeller | 304 Stainless Steel |
| Diffuser | 304 Stainless Steel |
| Neck Ring | Teflon |
| Shaft | 431 Stainless Steel |
| Casing | 304 Stainless Steel |
| O-Ring | EPDM |
| Pump Base | 304 Stainless Steel |
| Base Plate | Cast Iron |
| Mechanical Seal | Silicon Carbide/Silicon Carbide/EPDM |
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Installation Instructions for V-Flow Pump NV45-4S
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Preparation:
- Inspect the pump and motor for visible damage during shipping. Report any issues to the carrier or dealer immediately.
- Ensure the installation site is level, stable, and provides adequate space and ventilation for motor cooling and maintenance.
- Verify that the pump model and motor specifications match the system requirements and application.
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Mounting the Pump:
- Secure the pump base to a flat, solid surface to minimize vibrations during operation.
- Align and support the suction and discharge piping to prevent excessive strain on the pump.
- Install isolation valves on both the suction and discharge sides for easier servicing and maintenance.
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Piping Connections:
- Ensure piping matches the pump’s 2″ ANSI 150# flanged connections.
- Install gaskets to prevent leaks and ensure proper sealing.
- Remove any protective covers or caps from the flanges before installation.
- Include a bleed valve in the discharge line for hot water systems to relieve pressure during servicing.
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Electrical Connection:
- Have a certified electrician verify the electrical supply matches the motor’s specifications (5 HP, three-phase).
- Ensure correct motor wiring and confirm counterclockwise rotation when viewed from the motor’s rear.
- If rotation is incorrect, reverse any two leads on a three-phase motor to correct it.
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Priming the Pump:
- Remove the fill plug and fill the pump casing with water using a funnel.
- Open the vent plug to allow air to escape as the pump fills with water.
- Re-seal the vent and fill plugs once a steady stream of water flows from the vent.
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Initial Testing:
- Fully open the suction valve and partially open the discharge valve.
- Apply power to the motor and monitor for smooth operation without unusual noise or vibration.
- Gradually open the discharge valve to achieve the desired operating conditions.
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Safety Precautions:
- Never operate the pump without water to avoid damaging internal components.
- Replace coupling guards after installation to ensure operator safety.
- Ensure the pump is properly grounded and all connections are secure before starting.
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