DESMI Sea Water Marine Pumps
By Flow-Tech Industries

DESMI Vertical Inline Type DSL
DESMI Vertical Inline Type DSL


The DESMI DSL pumps are single-stage, double-suction, vertical, in-line, 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.

Design Features

The pumps are fitted with bearings and mechanical shaft seal at both top and bottom. This gives a robust construction, designed for trouble-free continuous duty.

The pumps are radially split. In spacer design, service including replacement of bearings and mechanical shaft seal can be carried out without removing motor and piping, providing significant advantages.


DESMI Vertical Inline Type NSL
DESMI Vertical Inline Type NSL


The NSL range is a series of sturdy and reliable pumps, and the development of the pumps has been based on the latest methods for the calculation of strength and optimum performance.

Design Features


                  The pump is a vertical in-line, radialy split, single-stage centrifugal pump with connecting flanges according  

                  to international standards. The pump is designed for mounting with electric motors having different international

                  flange dimensions.

                 The supreme performance is secured by casing design optimizing, impellers with double-curved blades and  

                 replaceable wear rings

DESMI Marine Pumps: Modular S
DESMI Marine Pumps: Modular S


The industrial design, compact with a clear-cut cylindrical form, together with the practical advantages such as easy assembling and modular construction of all components secure a long and unproblematic operation.


Design features


     The priming is based on the diffuser principle, which means that the priming ability is independent of valves   

     and other mechanical elements as it is the flow of liquid that carries the air.

           In addition the diffuser principle has the effect that the Modular S can pump slightly polluted as well as air-

           mixed liquids.

DESMI Rotan Marine Pumps: Rotan GP - General Purpose L
DESMI Rotan Marine Pumps: Rotan GP - General Purpose L


In cast iron, for clean, non-abrasive liquids. The simple and compact construction makes it a low-cost pump.
Capacity Range: Up to 50 m3/h - 225 gpm Speed: Up to 1750 rpm Differential Pressure: Up to 16 bar / 250 psi Suction Lift: Up to 0.5 bar / 15" Hg vacuum while priming

Up to 0.8 bar / 24" Hg vacuum while pumping Viscosity Range: Up to 7500 cSt Temperature: Up to 150°C / 300° F


DESMI Rotan Marine Pumps: Rotan HD - Heavy Duty
DESMI Rotan Marine Pumps: Rotan HD - Heavy Duty


Pumps in cast iron, for a wide range of viscous, non-corrosive liquids. HD pumps are specifically designed for difficult applications and those involving high viscosity liquids. Fuels, Oils, and Chemicals.




For more information about DESMI marine pumps, call our main number at 713.690.7474. You can also contact a Flow Tech sales representative via e-mail at [email protected].

Corporate Headquarters
4601 South Pinemont, Suite 100 Houston, Texas 77041

Phone: 713.690.7474
Fax: 713.690.7979
Other Locations
Beaumont, TX
Lake Charles, LA

E-mail: [email protected]
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