Product Description

The H-Flow Pump G20-7S from the H-Flow Series is a robust and efficient solution designed for industrial, commercial, and agricultural water applications. With its exceptional performance and precision engineering, this pump is ideal for reverse osmosis, water boosting, and process water systems.

Powered by a 0.75 HP motor, the H-Flow Pump G20-7S delivers a flow rate of up to 20 gallons per minute (GPM) and can handle discharge pressures up to 100 PSI. It features high-quality materials, including thermoplastic impellers and diffusers, and stainless steel shafts, ensuring long-lasting durability and efficiency.

Perfect for medium-duty applications, the H-Flow Pump G20-7S Pump provides reliable and energy-efficient water boosting and pressure management for various systems.

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H-Flow Pump G20-7S

Cast Iron 20 GPM 7 Stage .75 HP

Technical Specifications Model H-Flow Pump G20-7S Nominal Flow Rate 20 GPM Stages 7 Motor RPM 3500 RPM Motor Frame 56J (C-Face) HP Rating .75 HP Phases / Hertz 3 PH / 60 Hz Inlet 1 FNPT Dimensions (A x B) 15.14 x 10.53

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Construction & Design Features

Component Description Inlet / Motor Bracket Cast Iron Discharge Housing Cast Iron Pump Housing 304 Stainless Steel Tube Impellers Thermoplastic Diffusers Thermoplastic Wear Rings 316 Stainless Steel Shaft & Coupling 316 Stainless Steel Mechanical Seal Carbon/Ceramic O-Rings Buna-N

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Installation Manual

Installation Instructions

1. Preparation:
   • Ensure the installation site is clean, dry, and has sufficient ventilation.
   • Verify that the power supply matches the pump’s electrical requirements (3 HP motor, 60 Hz, 3500 RPM).
   • Ensure all piping and fittings are compatible with the pump’s inlet and discharge sizes (1.5″ NPT).
2. Mounting:
   • Secure the pump on a stable, level surface to prevent vibrations during operation.
   • If the pump has a support bracket (14+ stages), ensure it is mounted approximately 4 inches from the discharge for added stability.
3. Piping Connections:
   • Connect the suction pipe to the inlet, ensuring an airtight seal to prevent cavitation.
   • Connect the discharge pipe to the outlet, ensuring proper alignment to avoid stress on the pump housing.
   • Install a check valve and isolation valves on both the suction and discharge lines for easy maintenance.
4. Electrical Connection:
   • Use a certified electrician to connect the pump to the power source.
   • Follow all local electrical codes and guidelines for safety.
   • Ensure the motor is properly grounded.
5. Priming the Pump:
   • Fill the pump casing with water through the priming port to eliminate air pockets.
   • Ensure all air is purged from the suction line.
6. Testing:
   • Turn on the pump briefly to check for proper rotation (refer to the motor manual).
   • Inspect all connections for leaks or vibrations.
   • Run the pump at full capacity and monitor for stable operation.
7. Maintenance Tips:
   • Regularly inspect the pump for wear or leaks.
   • Clean or replace the mechanical seal and wear rings as needed.
   • Follow the manufacturer’s maintenance schedule for optimal performance.