〖〖sanli〗〗produces various types of multi-stage fire pumps, fire water pumps, fire pressure stabilization equipment, fire booster pressure stabilization equipment, horizontal fire pumps, vertical fire pumps, and other products. The quality has steadily improved, having passed multiple random inspections by quality departments. All products undergo high-quality testing before leaving the factory.

I. (sanli) XBD-GDL Vertical Multi-Stage Pipeline Fire PumpProduct Overview:

The vertical multi-stage fire pump unit is designed with reference to the fire pump standard GB6245-2006 "Performance Requirements and Test Methods for Fire Pumps," combined with years of production experience and modern hydraulic models. It is specifically a centrifugal pump for fire protection systems. The product has undergone type testing by the China Fire Equipment Quality Testing Center, with all performance indicators meeting standard requirements.

II. (sanli) XBD-GDL Vertical Multi-Stage Pipeline Fire PumpProduct Features:

1. The pump features a vertical, multi-stage sectional structure, with the inlet and outlet flanges aligned on the same straight line. The impeller uses hydraulic balancing to handle axial forces. A guide bearing is located at the lower end of the pump, and the shaft is connected to the motor shaft via a clamp coupling. The outer cylinder is made of stainless steel.

2. The shaft seal employs mechanical sealing.

3. The pump is driven by a motor and rotates clockwise when viewed from the motor end.

4. An exhaust valve (air vent) is installed at the pump outlet to ensure complete removal of air inside the pump.

5. The impeller is made of stainless steel to prevent rust and seizure between the impeller and guide vane after prolonged shutdown.

III. (sanli) XBD-GDL Vertical Multi-Stage Pipeline Fire PumpMain Applications:

The vertical multi-stage fire pump unit is primarily used for boosting water supply in fire protection system pipelines. It is also suitable for industrial and urban water supply and drainage, boosting water supply in high-rise buildings, long-distance water delivery, heating systems, bathroom water circulation, boiler cold and warm water circulation boosting, air conditioning cooling system water supply, and equipment matching.

IV. (sanli) XBD-GDL Vertical Multi-Stage Pipeline Fire PumpModel Significance:

V. (sanli) XBD-GDL Vertical Multi-Stage Pipeline Fire PumpStructure Diagram and Component Material Table:

VI. (sanli)XBD-GDL Vertical Multi-Stage Pipeline Fire PumpInstallation Instructions:

1. During installation, the weight of the pipeline should not be borne by the pump, as this may damage the pump.

2. The anchor bolts must be tightened during installation, and the pump should be inspected periodically to prevent loosening, avoiding severe vibration during startup that could affect performance.

3. Before installation, check the pump’s flow channel for any hard objects (such as stones or iron sand) that could affect operation and damage flow components.

4. For maintenance convenience and safety, install a regulating valve in the inlet and outlet pipelines and a pressure gauge near the pump’s inlet and outlet. For high-lift pumps, install a check valve before the outlet gate valve to prevent water hammer in case of sudden power loss, ensuring normal operation and extending the pump’s service life.

5. For suction applications, install a bottom valve, and ensure the inlet pipeline has minimal bends and no leaks or air leakage to maintain suction performance.

6. Before installing the pipeline, rotate the pump’s rotor components to ensure no friction or jamming. If issues are detected, disassemble the pump for inspection.

(sanli) Differences Between Multi-Stage and Single-Stage Fire Pumps:

1. Compared to single-stage fire pumps, multi-stage fire pumps have two or more impellers, enabling staged suction and pressure to lift water to higher elevations. The head can be adjusted by changing the number of impeller stages.

2. Another difference is that the flow curve of fire pumps is relatively flat, preventing excessive pressure increases at low flow rates that could exceed hydrant outlet pressure limits.

3. Multi-stage fire pumps can be classified as multi-stage pumps.

4. Single-stage fire pumps can be classified as single-stage pumps.

5. Both multi-stage and single-stage fire pumps fall under the category of pipeline centrifugal pumps.

〖〖sanli〗〗Comes with 3CF certification,comprehensive models available!

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