CLG/CDL Marine Vertical Multistage Single-suction Fire Pump

Overview

Multistage centrifugal pump and single-stage pump, the difference is that the multistage pump has more than two impeller, can be divided into multiple levels of water absorption and pressure water, so that the head of multistage centeifugal pump can reach up to 150m.With the advantages of compact structure, low noise, small occupation area good characteristics，CLG, CDL Series marine vertical multi-stage single-suction centrifugal pump is used to transmit clear water and physical and chemical properties similar to liquid water. It  mainly applied in shipbuilding industry, high-rise building water supply, fire water supply, water supply and drainage, factories and enterprises of low pressure boiler water circulation, centralized heating system, etc.

Pump data

  Flows to      

120(m³/h)

Heads to

192m

Efficiencies to

72.5%

Inlet/out dia to

100/80 mm

Power to

75 kW

Advantages

High stability

Through the matching of symmetrical impellers and guide vanes, as well as reasonable matching clearance and wide axial throttle design, the pump can still maintain its high stability and operating efficiency after long-term operation.

Good cavitation performance

Excellent structural design, reliable wear-resistant materials, and precise casting technology make the pump have good anti-cavitation performance, and the whole machine runs smoothly and has low noise.

low maintenance

The use of precision casting reduces the number of wearing parts and maintenance and disassembly, prolongs the product life, avoids a series of problems caused by excessive disassembly and assembly, and reduces maintenance costs.

The excellent design of our company's engineers, components made of high-quality materials can extend the life of the pump, reduce the frequency of maintenance, operation stability in complex environments, but it  also cause different prices. If you need more details about this, you can click on the news or send an email to ask us

Structural Specifications

Model Explanation: 

Pictue of CLG, CDL Series marine vertical multi-stage single-suction centrifugal fire pump	Explanation detail-25CLG(R)3-10×9 / 40CDL(R)8-10×9
	25/40—Inlet diameter 25/40mm
	CLG—Marine vertical pump
	CDL—Marine sub-vertical multi-stage centrifugal pumps
	R—Indicated that hot water
	3/8—Capacity 3/8m3/h
	10—Single-stage Head10m
	9—9 Series

Parameter of CLG/CDL marine vertical muti-stage single-suction fire pump:

(In addition, please provide the parameter of the marine pump you need and we can customize the suitable type for you.)

Main technical parameter

Possible failures and repair methods

The pump cannot absorb water

Inability to absorb water normally is one of the more common faults of multi-stage centrifugal pumps. In most cases, it is caused by the blockage of the bottom valve of the pump by pollutants, and the bottom valve is not smooth and cannot be opened. This will lead to the problem that the pump cannot absorb water. This can also be a problem if the suction pipe is relatively resistant and the suction pump filter is clogged. Treatment method: It is necessary to check the bottom valve lightly. Determine whether there is a blockage problem. If there is a blockage, it should be cleaned up in time to ensure the smoothness of the bottom valve. In addition, it is also necessary to inspect the multi-stage centrifugal pump filter, clean up the pollutants attached to the filter in time, and replace the suction pipe pipeline to reduce the suction resistance and ensure the normal use of the suction pipe.

Device sound and vibration are abnormal

Under normal operation, the multi-stage centrifugal pump should maintain a stable and continuous sound. If there are problems such as discontinuous sound or frequent vibration, it indicates that the equipment is faulty. It needs to be stopped in time for maintenance. The problem of abnormal vibration of multi-stage centrifugal pump is mainly caused by mechanical equipment and electrical reasons. When carrying out maintenance, it is necessary to carry out assembly after disassembly and inspection. The key to dealing with such problems is to do a good job in the inspection and replacement of the impeller. It should be ensured that the center of the motor shaft and the center of the bearing are consistent, and the fixing bolts should be inspected and tested. When cavitation occurs, the multi-stage centrifugal pump may be oxidized or impeller eroded, which will cause problems such as abnormal sound and vibration. The air in the pump should be removed in time and the water inlet pipe should be dredged.

Pump Picture