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Gear Pumps
ROTAN Internal Gear Pump
ROTAN internal gear pump for self-priming, pulsation-free transfer of high-viscosity media such as resins, paints, syrups, asphalt and edible oils across chemical, petrochemical, food and paper industries, with reversible flow direction and back-pull-out design for easy maintenance.
Selection support
- Share flow rate, pressure, medium, temperature and material requirements.
- We can support pump selection, dosing package configuration and spare parts matching.
- Detailed English datasheets and quotations are available for priority models on request.
Technical details
A leading manufacturer of internal gear pumps
A/S SE SMITHSKE, founded in 1834, became known worldwide for its DESM-brand products. ROTAN pumps, manufactured by DESMI ROTAN, are distributed across the globe through its subsidiaries, agents and distributors.
In 1915 a Danish-American immigrant invented the working principle of the internal gear pump. In 1921 a Danish company was licensed to manufacture this type of gear pump and promoted it worldwide under the ROTAN brand. The standardized structural design of the ROTAN pump has become today's widely recognized state-of-the-art internal gear pump design.
The ROTAN internal gear pump provides favorable flow conditions, since a change of flow direction requires only a minor adjustment to the pump. This delivers exceptional self-priming capability and smooth, steady transfer, while also handling high-viscosity media.
1. Advantages of the ROTAN pump:
- Media flow direction and pump inlet/outlet orientation can be freely defined, making installation convenient.
- The pump uses casing-foot support. Because the weight of the pump head is concentrated mainly on the casing, casing-foot support distributes loads more evenly across the pump and piping, giving a longer service life.
- Back-pull-out design: with an auxiliary extended coupling, the pump can be removed at will without dismantling the inlet/outlet piping or the motor and gearbox, making maintenance easy.
- Standardized design with highly interchangeable parts, reducing spare-parts inventory.
2. Application fields of the ROTAN pump:
| Media | Industry |
| Fruit juice, flavorings, jam, syrup | Fruit processing |
| Paints and coatings, rubber solutions, viscose, latex | Rubber industry |
| Paint, synthetic raw materials, acids, caustic soda | Leather dyes |
| Petroleum, oil sludge, cleaning agents | Petroleum industry |
| Viscose, caustic soda, glue, paint, water glass, alkaline liquor | Paper and fiber industry |
| Emulsifiers, dispersions, pastes | Pharmaceuticals |
| Cocoa, glucose, oils, flavorings | Chocolate and confectionery industry |
| Fiber glue, caustic soda, dyes | Textiles |
| Blood, fats | Slaughterhouses |
| Polyesters, epoxy resins, hardeners, polyols, isocyanates, retarders, resins | Plastics industry |
| Ammonia | Fertilizers |
| Turpentine, kerosene, oils, dyes | Wood treatment |
| Shaving cream, deodorant, face cream, shampoo, soap liquid, perfume, petroleum jelly, wax, glycerin | Chemicals |
| Aromatics, dispersions, emulsions, flavorings, resins, adhesives, latex, hydroxides, acids | Chemicals |
| Printing ink, inks, dyes | Printing industry |
| Dyes, paint, solvents | Paint and coatings industry |
| Gels, photographic emulsions | Photography |
| Asphalt, light oil, heavy oil, kerosene, gasoline, solvents, hydrocarbons, ethylene glycol, hot kerosene | Petrochemical |
| Palm oil, soybean oil, corn oil, coconut oil, peanut oil | Vegetable oil industry |
| Syrup, molasses, thermal oil | Sugar industry |
3. Selected ROTAN pump reference projects: ROTAN internal gear pumps have been supplied to a wide range of Chinese customers across the coatings, fine-chemical, petrochemical, power and viscose-fiber sectors, handling media such as coatings, rosin, sulfonic acid, heavy fuel oil, insulating oil, soybean oil, polymers and viscose, in models including the CD, HD, GP and ED series (e.g. CD81ETR-3U22BS, HD81ERDKT-1U11B, GP66EM-1U3B2, ED33EFR-3U88/3C).