Sprinkler Pump Sizing and Jockey Pump Sizing – Free Excel Download

Sprinkler Pump Sizing involves several steps to ensure that the pump meets the necessary flow rate and pressure requirements for the sprinkler system. Here’s a detailed guide on how to size a sprinkler pump:

Determine System Requirements

Understand the water demand of the sprinkler system based on factors like building size, occupancy type, and fire protection codes.

Calculate Total Required Flow

Calculate the total flow required for the sprinkler system. This includes both the demand for the design area (density/area) and any additional flow requirements.

Determine Required Pressure

Determine the pressure needed to deliver the required flow throughout the system, considering factors like elevation changes, pipe friction losses, and hydraulic design requirements.

Select Sprinkler and System Components

Choose appropriate sprinkler heads, pipe sizes, valves, and fittings based on the calculated flow and pressure requirements.

Select Pumps

Main Fire Pump

Choose a pump capable of providing the required flow and pressure under all foreseeable conditions (maximum demand, system losses, etc.). Consider factors like pump type (centrifugal, vertical turbine), efficiency, and reliability.

Jockey Pumping:

A jockey pump maintains system pressure during normal operation and helps minimize frequent starts/stops of the main fire pump. Select a jockey pump with sufficient capacity to compensate for minor pressure drops.

Perform Hydraulic Calculations

Use hydraulic calculation software or manual calculations to determine pipe sizes, pressure losses, and system performance under various scenarios (e.g., design flow, maximum flow, minimum flow). So, you can calculate main Sprinkler Pump Sizing.
Consider factors like pipe material, fittings, valves, and any special system features (e.g., looped systems, zones).

Check Compliance

Ensure that the system design complies with relevant codes and standards (e.g., NFPA 13 for sprinkler systems, NFPA 20 for fire pumping).

Evaluate Performance for Sprinkler Pump Sizing

Verify that the selected pumps can meet the calculated flow and pressure requirements with an acceptable safety margin. Consider factors like pump curves, system curves, and pump efficiency.

System Testing and Commissioning

After installation, conduct flow and pressure tests to validate system performance and make any necessary adjustments.

Documentation and Maintenance

Document the system design, including hydraulic calculations, pumping specifications, and test results. Establish a regular maintenance schedule to ensure the ongoing reliability and effectiveness of the fire protection system.

You can download Sprinkler Pump Sizing Excel Sheet below the link

Note: All Password are [“salaimep” or “salaimep.com”]

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