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

• Single-Phase Motor

  • Ideal for locations without three-phase power

  • Same flow (up to 45 GPM) and pressure (up to 232 PSI) as three-phase models

  • Slightly lower electrical efficiency and better suited for lighter duty cycles

• Three-Phase Motor

  • Standard for commercial and industrial sites

  • Higher electrical efficiency and smoother continuous operation

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 Manual

Installation Instructions for V-Flow Pump NV45-4S

1. 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.
2. 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.
3. Piping Connections:
   • Ensure piping matches the pumps 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.
4. Electrical Connection:
   • Have a certified electrician verify the electrical supply matches the motors specifications (5 HP, three-phase).
   • Ensure correct motor wiring and confirm counterclockwise rotation when viewed from the motors rear.
   • If rotation is incorrect, reverse any two leads on a three-phase motor to correct it.
5. 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.
6. 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.
7. 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.