Jockey Pump Set 3 HP – Fire Pump Pressure Maintenance Unit

A jockey pump is a small pump that keeps a fire fighting system filled and under pressure. Every fire system has tiny leaks at valves and joints, and small pressure changes from the water supply. Without a jockey pump, these small drops in pressure would start the large main fire pump again and again, which wears it out and wastes power. The jockey pump takes care of these small changes. When the pressure falls slightly, the jockey pump starts and brings it back up. If the pressure keeps falling, because a sprinkler or hose valve has opened, the main fire pump starts. This 3 HP unit is a small, quiet pump, normally a multistage type, with an electric motor and a pressure switch. It is used in fire systems for buildings, factories and campuses. Its flow rate and pressure depend on the model, so match them to your system.

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Jockey Pump Set 3 HP – Key Features

• Keeps the system pressurised and ready
• Protects the main fire pump from frequent starts
• Small, quiet 3 HP motor
• Works with a pressure switch for automatic start and stop
• Compact set: easy to fit beside the main pump

Jockey Pump Set 3 HP – Technical Specifications

• Type: Jockey (pressure maintenance) pump set
• Motor: 3 HP, electric, usually three phase. Check your voltage
• Pump type: usually multistage. Check your model
• Rated flow and head: depend on the model. Please check the data plate for your pump
• Control: pressure switch and starter or control panel
• Standards: NFPA 20 and local rules guide fire pump design. Check the label for your unit

Who Should Buy This Pump Set?

• Buildings with a sprinkler or hydrant system
• Factories, malls and hotels
• Hospitals, schools and campuses
• Fire pump room installers and contractors
• Maintenance teams replacing a jockey pump

How the Jockey Pump Fits In

A fire pump room usually has three parts. The jockey pump keeps the pipe full and pressurised. The electric main pump starts when pressure falls fast. The diesel pump is the backup if the electric power fails. The jockey pump is set to start at a slightly higher pressure than the main pump, so it takes care of small drops, and the main pump starts only if the pressure keeps falling.

Installation and Usage Guide

• Install it on a firm base, close to the main pump header
• Connect it to the fire system pipework through a check valve and isolating valves
• Fit a pressure switch and set the start and stop pressures with your designer
• Wire the motor through a proper starter and a protected supply
• Test the automatic start and stop
• Installation should be done by a qualified fire pump contractor

Frequently Asked Questions

What does a jockey pump do?
It keeps the fire system under pressure and covers small leaks.

Why not let the main pump do it?
The main pump would start too often, which wears it out.

What pressure does it need?
It depends on your system design. Set it with your designer.

Is it for pumping a fire?
No. It only maintains pressure.

Does it run all the time?
No. It starts when pressure falls and stops when pressure is restored.

Which standard applies?
Fire pump systems usually follow NFPA 20 and local rules.

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