Desmi Centrifugal Pump For Offshore Application Type DSL

Metering pump, as the name suggests, is a type of pump which is used on a ship not only to transfer a liquid from one place to another but to supply it in a precise volume. Metering pump can be adjusted to provide different flow rates. They are generally used when the precision of volume to be delivered is very important.

The marine application of metering pump is in the form of chemical dosing pumps, which is used to transfer precise amount of dosing chemicals, especially in boilers. They are also used for dosing chemical additives to protect corrosion in the cooling water system. It is to note that the amount of dosing has to be precise. Overdosing or under-dosing may cause corrosion and other damages inside the boiler, which may end up in heavy repairs.

The metering pump is connected to the system in which the chemicals are injected with the help of valve in the pipeline. The pressure produced by this pump should be higher than the pressure in the pipeline, or else there will not be any dosing and the level of chemicals in the dosing tank will be the same.

The metering pumps consist of a small motor, which moves the plunger, in and out of the barrel, to provide pressure in the system. The check valves are provided in the suction and discharge side of the pump. A plunger type metering pump is a positive displacement pump and is suitable to use in a high-pressure system.

As this type of pump is frequently used to dispense concentrated and highly corrosive liquids, considerable care must be taken to ensure that the materials used in construction, particularly those of parts in direct contact with the liquid, are capable of resisting chemical reaction and corrosion.

DSL Centrifugal Pump For Offshore Application

The Desmi centrifugal pumps for offshore type DSL are single-stage, double-suction, vertical, centrifugal pumps. The design of the suction side provides for a perfect flow, and the inlet is placed in line with the outlet. Add to this the advanced double-suction impeller and the result is high efficiency and low NPSH values. The Desmi centrifugal pump for offshore type DSL series is widely used within different applications and markets.