What Is the XBD-CDS Horizontal Split-Case Fire Pump?
The XBD-CDS horizontal split-case fire pump (also known as a double-suction centrifugal fire pump or horizontal fire water supply pump) is a high-performance, heavy-duty pump designed for large-scale fire protection water supply systems. Utilizing the robust CDOW-type pump structure, it features a split-case design that allows for easy maintenance without disturbing the piping. Its balanced hydraulic design, short bearing span, and high-efficiency impeller make it a preferred choice for industrial and commercial fire protection networks.
Whether you are equipping a large factory, a commercial high-rise, a hospital complex, or a municipal fire hydrant network, the XBD-CDS pump delivers reliable, high-volume water flow to meet fire safety requirements.
Key Features & Benefits
Reliable & Efficient Performance
The pump uses an advanced hydraulic model that improves efficiency and reduces cavitation risk. The straight-line design with reinforcing ribs ensures structural stability, while the short bearing span increases shaft rigidity, resulting in smooth operation with low vibration and noise.
Leak-Free Mechanical Seal
Equipped with a mechanical seal, the XBD-CDS pump ensures drip-free operation, maintaining a clean pump room environment.
High-Quality Casting
The pump body and cover are cast using resin sand molding, which guarantees precise dimensions, smooth flow passages, and improved hydraulic efficiency. This results in a durable pump suitable for high-pressure fire-fighting conditions.
Easy Maintenance
The split-case design allows the upper cover to be removed for inspection or replacement of the impeller, shaft, and seals without disconnecting the suction and discharge piping. This significantly reduces maintenance downtime.
Technical Specifications
| Parameter | Specification |
|---|---|
| Flow Rate Range | 60 – 350 L/s |
| Head Range | 30 – 200 m |
| Power Range | 30 – 1000 kW |
| Speed | 1450 rpm / 2900 rpm |
| Voltage | 380V / 6kV / 10kV |
| Pump Type | Horizontal Split-Case, Double-Suction |
| Seal Type | Mechanical Seal |
| Bearing Max. Temp. | ≤ 75°C |
Model Designation
| Code | Meaning |
|---|---|
| XBD | Electric Motor-Driven Fire Pump |
| 10 | Rated Pressure (MPa × 10) |
| 80 | Flow Rate (L/s) |
| G | Fire Water Supply Type |
| CDS | Chaodun Horizontal Split-Case Double-Suction Pump |
Installation Guide
Pre-Start Checks
- Rotate the rotor: Before startup, manually rotate the pump rotor to ensure it moves smoothly without binding.
- Prime the pump: Close the discharge gate valve and fill the pump casing with water (or use a vacuum pump if no foot valve is installed). Ensure the pump is completely filled and free of trapped air.
- Isolate gauges: If equipped with a vacuum or pressure gauge, close the cock connecting it to the pump before starting the motor.
Startup & Operation
- Start the motor: Once primed, start the motor. Wait for speed to stabilize, then gradually open the discharge gate valve. Adjust the valve to reach the desired flow rate.
- Monitor bearing temperature: Ensure bearing temperature does not exceed 75°C.
- Lubrication: Use calcium-base grease, filling 1/3 to 1/2 of the bearing housing volume.
- Inspect regularly: Check the elastic coupling and motor bearing temperature rise. If unusual noise or vibration occurs, stop the pump immediately for inspection.
Shutdown Procedure
To stop the pump: Close the gauge cocks and discharge gate valve first, then cut off the power. In cold environments, drain the remaining water by opening the drain plug at the bottom of the pump casing to prevent freezing damage.
Application Scenarios
The XBD-CDS split-case fire pump is widely deployed in:
- Industrial & Commercial Buildings: Factories, hospitals, commercial complexes, hotels, office towers, and residential high-rises.
- Fire Protection Systems: Hydrant systems, automatic sprinkler networks, and water mist suppression systems.
- Fire Pipe Network Boosting: Used as a booster pump in large-scale fire water supply networks to ensure adequate pressure at all endpoints.
Frequently Asked Questions
Q1: What is the maximum flow rate of this pump?
The XBD-CDS series supports flow rates from 60 to 350 L/s, making it suitable for large-scale fire protection systems requiring high-volume water delivery.
Q2: How is the pump maintained?
The split-case design allows the upper casing to be removed for access to the impeller, shaft, and seals without disconnecting the suction or discharge piping. This makes maintenance significantly faster compared to end-suction or inline pumps.
Q3: What voltage options are available?
The pump motor is available in 380V, 6kV, and 10kV configurations to match the facility’s electrical infrastructure.
Q4: Why is resin sand casting important?
Resin sand casting produces pump casings with high dimensional accuracy and smooth internal surfaces. This reduces hydraulic friction losses, improves efficiency, and ensures consistent performance over the pump’s service life.
Why Choose Chaodun Pump?
Chaodun Pump delivers XBD-CDS horizontal split-case fire pumps that are engineered for reliability, efficiency, and ease of maintenance. Every unit undergoes rigorous testing before shipment to meet fire protection standards. Contact us for technical specifications or a custom quote for your fire protection project.