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W/G
Product Feature
W-Series Jockey Pump Set consists of water pumps, an air pressure tank (bladder/diaphragm-type tank), an electrical control cabinet, and necessary auxiliary components such as valves and pipelines. Typically, two pumps with identical performance are configured for mutual backup (one in use, one on standby). Under normal conditions, the two pumps alternate automatically. If one pump fails, the other takes over. The air pressure tank is an essential component for maintaining pressure during equipment shutdown. It supplies water to the fire protection pipeline network to sustain pressure when the equipment is idle and also functions as a pressure switch. The electrical control cabinet regulates the start and stop of the pumps based on pressure input signals, enabling automatic operation of the equipment. 1. Dual-Pump Redundancy (One Operates, One Standby)
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| Model Number | Fire Pump Model | Flow Rate(L/s) | Pressure(MPa) | Power(kW) | Air Pressure Tank | |
| Specifications | Effective Water Capacity(m3) | |||||
W5.0/0.50-G1.6 | XBD10.0/1.9W-G | 1.9 | 1.0 | 1.5 | SQL1000x2400-1.6 | 0.3 |
| W5.0/0.30-G1.6 | SQL800x2270-1.6 | 0.15 | ||||
| W5.0/0.80-G1.6 | SQL1200x2800-1.6 | 0.45 | ||||
| W2.0/0.45-G1.0 | XBD4.6/2.4W-G | 2.4 | 0.46 | 2.2 | SQL1000x2400-1.0 | 0.3 |
| W2.0/0.30-G1.0 | SQL800x2270-1.0 | 0.15 | ||||
| W2.0/0.70-G1.0 | SQL1200x2800-1.0 | 0.45 | ||||
W1.5/0.45-G0.6 | XBD3.4/2.4W-G | 2.4 | 0.34 | 2.2 | SQL1000x2400-0.6 | 0.3 |
| W1.5/0.30-G0.6 | SQL800x2270-0.6 | 0.15 | ||||
| W1.5/0.60-G0.6 | SQL1200x2800-0.6 | 0.45 | ||||
| W1.5/0.45-L0.6 | XBD3.4/4.3W-L | 4.3 | 0.34 | 4 | SQL1000x2400-0.6 | 0.3 |
| W1.5/0.30-L0.6 | SQL800x2270-0.6 | 0.15 | ||||
| W1.5/0.60-L0.6 | SQL1200x2800-0.6 | 0.45 | ||||
Model Meaning
Working Principle
Under normal conditions, the jockey pump and air pressure tank compensate for pressure losses in the fire protection pipeline network caused by routine leaks. While the jockey pump operates, it delivers water to the fire protection pipeline network. Excess water enters the air pressure tank, expanding the water chamber and compressing the air chamber, thereby increasing the pressure. When the pressure in the fire protection pipeline network reaches the upper limit (P4), the jockey pump stops, entering a pressure-maintaining shutdown state. At this point, the compressed air in the tank pushes the stored water into the fire protection pipeline network. As the water chamber shrinks and the air chamber expands, the pressure gradually decreases. When the pressure drops to the lower limit (P3), the jockey pump restarts. This cycle repeats continuously, ensuring the pipeline network pressure remains within the upper and lower limits.
In the event of a fire, when fire hydrant nozzles are opened, the pressure in the fire protection pipeline network continues to drop. If the jockey pump can no longer meet the pressure requirements, and the pressure falls to the fire pump activation threshold (P2) (or upon receiving other fire signals), the fire pump starts (while the stabilizing pump stops). During the fire pump's startup, the water discharged from the air pressure tank maintains the pipeline network pressure and supplies firefighting water until the fire pump is fully operational.
Below is a detailed explanation of its working principle:
The jockey pump automatically starts when the system pressure drops below the pre-set lower limit (P3) due to minor leaks or water loss in the pipeline.
It delivers water into the fire protection network, compensating for pressure loss.
Excess water is stored in the air pressure tank (bladder/diaphragm type), compressing the air cushion inside.
Once pressure reaches the upper limit (P4), the pump stops, and the compressed air in the tank pushes water back into the system to maintain pressure.
When a fire occurs, water demand surges, causing a rapid pressure drop below the fire pump activation threshold (P2).
The jockey pump stops operating, and the main fire pump starts to supply large volumes of water.
During the short delay before the main fire pump reaches full capacity, the pressure tank provides temporary water supply to prevent pressure loss.
Product Structure
| Item No. | Part Names | Item No. | Part Names |
| 1 | Pressure Gauge | 8 | Flexible Joint |
| 2 | Pressure Gauge | 9 | Check Valve |
| 3 | Pressure Sensor | 10 | Jockey Pump |
| 4 | Safety Valve | 11 | Steel Base |
| 5 | Ball Valve | 12 | Discharge Manifold |
| 6 | Air Pressure Tank | 13 | Suction Manifold |
| 7 | Butterfly Valve |
Model selection instructions
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Q1: What are the key features of the XBC-SOW Diesel Double Suction Fire Pump?
A1: The XBC-SOW offers high reliability, low noise, easy maintenance, and customization options.
Q2: How does this industrial fire pump handle high flow and head requirements?
A2: The comprehensive performance curve ensures the pump meets demanding high flow and head needs.
Q3: Can I customize the double suction fire pump to suit my specific application?
A3: Yes, we offer customization options to tailor the pump to your unique requirements.
Q4: Is the XBC-SOW suitable for high-rise building fire protection systems?
A4: Absolutely. This pump is ideal for high-rise building fire protection applications.
Q5: How long is the warranty period for the XBC-SOW Diesel Double Suction Fire Pump?
A5: We provide a two-year warranty for your peace of mind and long-term reliability.
Q6: What kind of after-sales service do you offer for this high-pressure pump?
A6: Our dedicated after-sales service ensures your pump runs smoothly throughout its lifetime.
Q7: Can this double suction pump be used in oil and chemical plant firefighting?
A7: Yes, the XBC-SOW is well-suited for oil and chemical plant firefighting needs.
Q8: Is the XBC-SOW a reliable choice for power facility fire emergency response?
A8: Definitely. This pump is designed to provide reliable performance during power facility emergencies.
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