Pipeline centrifugal pumps are used for conveying clean water and other liquids with similar physical 

and chemical properties to clean water. They are suitable for industrial and urban water supply and

 drainage, high-rise building water pressurization, garden irrigation, fire fighting pressurization, long-distance

 transportation, HVAC refrigeration circulation, bathroom hot and cold water circulation pressurization, 

and equipment matching. This series of pumps features superior performance, high reliability, long service life,

 reasonable structure, and beautiful appearance, and is at the forefront of the industry.

Adjustment and usage of pipeline centrifugal pumps

Precautions for using a pipeline centrifugal pump

1. Starting the pipeline centrifugal pump

(1) Before starting the pipeline centrifugal pump, rotate the pump rotor to check if it is flexible;

(2) Check if the motor rotation direction is consistent with the pump rotation direction;

(3) Open the pump's suction valve (if a suction valve is installed), close the pump outlet pipe gate valve and pressure 

gauge cock, filling the pump with liquid, or use this system to purge air from the suction pipe and pump;

(4) Check the tightness of the pump and motor connecting bolts and the safety conditions around the pump, ensuring 

the pump is ready to start;

(5) Start the motor. After the pump is running normally, open the pressure gauge cock and slowly open the pump outlet 

gate valve until the pressure gauge pointer reaches the required pressure (control the pump's head according to the outlet 

pressure gauge reading).

2. Operating the pipeline centrifugal pump

(1) This pipeline centrifugal pump relies on an internal balancing mechanism to balance the axial force. Balancing liquid flows

 out from the balancing device, and the balancing liquid is connected to the inlet section through a balancing water pipe, or 

a short pipe is designed outside the balancing room, through which the balancing liquid flows to the outside of the pump. 

To ensure normal pump operation, the balancing water pipe must not be blocked.

(2) During startup and operation, it is essential to carefully observe instrument readings, bearing temperature, packing leakage, 

and pump vibration and noise levels. Any abnormalities should be addressed promptly.

(3) Bearing temperature rise reflects the pump's assembly quality. The bearing temperature rise must not exceed 35°C above

 the ambient temperature, and the bearing temperature must not exceed 75°C.

(4) The pump rotor experiences a certain amount of axial movement during operation. This axial movement should be within 

permissible limits, and the clearance between the motor and the two halves of the pump coupling should be maintained.

(5) During service, the impeller, sealing ring, guide vane sleeve, shaft sleeve, balance disc, and other components should be 

regularly inspected for wear. Excessive wear should result in timely replacement.

3. Shutdown of the pipeline centrifugal pump

(1) Before shutting down the pipeline pump, first close the pressure gauge valve, then slowly close the outlet gate valve. After the

 pipeline pump has stopped, close the pump's suction valve (if a suction valve is installed);

(2) If the pipeline pump is to be shut down for a long period of time, remove all the drain valves below the pump's inlet, middle,

 and outlet sections to drain the remaining water. Then disassemble, clean, and oil the pump before packaging and storing it.