GP26Manufacturer-listed size; suffix and drive remain to be specified.
Enquire with this reference →
DESMI ROTAN · Product family
DESMI ROTAN General-purpose internal gear pump GP for Lubricating and compatible waste oils
ROTAN GP is a compact cast-iron option for clean, non-abrasive liquid transfer. Its general-purpose construction is a starting point for oil and compatible utility-fluid duties with moderate viscosity.
Maximum family flow50 m³/h
Maximum differential pressure16 bar
Maximum speed1,750 rpm
EXPLORE THIS PRODUCT DOSSIER
Product, engineering and service information in one place
ENGINEERING DATA
Technical specifications
Independent family limits. They are not simultaneous operating points and do not establish the rating of an individual pump size.
| Parameter | Published reference |
|---|---|
| Maximum family flow | 50 m³/h |
| Maximum differential pressure | 16 bar |
| Maximum speed | 1,750 rpm |
| Maximum viscosity | 7,500 cSt |
| Maximum liquid temperature | 150 °C |
IDENTIFY THE RIGHT BUILD
Models & configuration
A family or hydraulic size is the starting reference. Include the complete nameplate designation, serial number, materials, seals, drive and connection details when ordering.
GP33Manufacturer-listed size; suffix and drive remain to be specified.
Enquire with this reference →GP41Manufacturer-listed size; suffix and drive remain to be specified.
Enquire with this reference →GP51Manufacturer-listed size; suffix and drive remain to be specified.
Enquire with this reference →GP66Manufacturer-listed size; suffix and drive remain to be specified.
Enquire with this reference →Materials & performance
Cast-iron pump; seal and bearing options require fluid review.
Check abrasiveness and chemical compatibility first. Choose the connection size and speed from the duty curve, and include the required motor standard.
DFIN reviews the operating point together with the suction condition and drive. Supply the fluid properties at both start-up and normal operation so the proposed arrangement can be checked against the appropriate curve.
Application industries
DFIN application links identify duties to discuss, subject to the specified fluid and complete pump configuration.
Typical duties to review
- Lubricating and compatible waste oils
- Glycol and other compatible clean liquids
Compatible parts & service
Use the pump serial number, complete designation and assembly drawing to identify the shaft seal or packing, rotor, idler, bushes, gaskets and relief-valve components.
Send the required component positions and the existing material codes with your enquiry. Kit numbers are confirmed against the pump build; a WILDEN Air Kit or Wet Kit does not apply to this gear-pump design.
Maintenance planning
Use the selected model’s operating manual for isolation, draining, inspection and reassembly. Report leakage, unusual noise, loss of output or visible wear with photographs and the operating history. DFIN can use the equipment identity and drawing positions to prepare a parts enquiry.
Request matching service parts →DFIN KNOWLEDGE BASE
DFIN technical notes for ROTAN GP
Shanghai Dfin Pump Co., Ltd. has reorganised the available product facts into practical notes for identification, selection, application review and maintenance planning. These notes support an initial comparison; the final duty point and order code still require project-specific confirmation.
PERFORMANCE NOTE
ROTAN GP: how to read the operating range
Maximum family flow: 50 m³/h; Maximum differential pressure: 16 bar; Maximum speed: 1,750 rpm; Maximum viscosity: 7,500 cSt. These figures describe the documented family or model reference; the usable duty point must be checked against speed, liquid properties, suction conditions and the selected drive.
MODEL IDENTIFICATION
ROTAN GP: model and configuration checklist
Identification references include GP26, GP33, GP41, GP51, GP66. Use the complete nameplate designation, serial number, connection, materials, seal arrangement and drive details when requesting a replacement or quotation.
APPLICATION REVIEW
ROTAN GP: materials and suitable duties
Cast-iron pump; seal and bearing options require fluid review. Typical duties to review include Lubricating and compatible waste oils, Glycol and other compatible clean liquids. Check abrasiveness and chemical compatibility first. Choose the connection size and speed from the duty curve, and include the required motor standard.
SERVICE PLANNING
ROTAN GP: maintenance and spare-parts preparation
Use the pump serial number, complete designation and assembly drawing to identify the shaft seal or packing, rotor, idler, bushes, gaskets and relief-valve components. Isolate the equipment, follow the applicable maintenance procedure and confirm every replacement item against the installed configuration before ordering.
PRODUCT & ENGINEERING FAQ
Questions about DESMI ROTAN ROTAN GP
Use these answers to prepare a technically complete comparison and enquiry.
How should DESMI ROTAN ROTAN GP be selected?
Start with the real duty point: fluid, flow, differential pressure or head, temperature, viscosity, solids, suction condition and operating pattern. DFIN then reviews size, materials, sealing and drive.
Are the listed maximum values a guaranteed operating point?
No. They describe independent catalog boundaries for the family or model. The selected point must be checked against the applicable curve, size, speed, fluid and drive arrangement.
What information confirms the complete model code?
Provide the full nameplate designation and serial number plus materials, seal arrangement, ports, drive, motor supply and any special option. A family name alone is not an order code.
Can DFIN help identify service parts?
Yes. Send the equipment identity, drawing position, existing part code, photographs, material and failure description. DFIN can prepare a parts enquiry matched to the installed configuration.
What should be included in the quotation request?
Include quantity, fluid data, operating point, installation, connection standard, available utilities, hazardous-area requirements and delivery destination. For a replacement, include the nameplate and current drawing.
SHANGHAI DFIN PUMP CO., LTD.
Turn this reference into a clear quotation.
Send the full model and serial number, quantity, fluid, required flow and pressure, temperature, viscosity, installation details and delivery destination. For a replacement, attach the nameplate and existing drawing.
Prepare an enquiry for ROTAN GPRelated DESMI ROTAN products
View the brand collection →
DESMI ROTAN · Product family
DESMI ROTAN Heavy-duty cast-iron internal gear pump HD for Viscous oils and bitumen
Heavy-duty cast-iron internal gear pump
ROTAN HD provides a configurable positive-displacement platform for viscous, non-corrosive liquids. Heating and sealing choices make the family relevant to processes where product temperature and viscosity change between start-up and normal operation.
- Maximum family flow
- 250 m³/h
- Maximum differential pressure
- 16 bar
DESMI ROTAN · Product family
DESMI ROTAN Stainless-steel chemical-duty internal gear pump CD for Compatible acids and alkalis
Stainless-steel chemical-duty internal gear pump
ROTAN CD combines the internal-gear pumping principle with stainless-steel construction for chemically demanding liquids. DFIN reviews the complete wetted path, including seals and bearings, for the specified composition.
- Maximum family flow
- 250 m³/h
- Maximum differential pressure
- 16 bar
DESMI ROTAN · Product family
DESMI ROTAN Magnetically coupled internal gear pump ED for Isocyanates and polyols
Magnetically coupled internal gear pump
ROTAN ED uses a magnetic coupling for duties where containment and maintenance of the shaft-seal area are central concerns. Its application range includes moisture-sensitive or otherwise demanding process liquids.
- Maximum family flow
- 90 m³/h
- Maximum differential pressure
- 16 bar
DESMI ROTAN · Product family
DESMI ROTAN Steel internal gear pump PD for Refinery and petrochemical transfer
Steel internal gear pump
ROTAN PD is the steel-construction member of the ROTAN range for industrial and refinery service. Heating and seal arrangements can be specified around the particular liquid and installation.
- Maximum family flow
- 250 m³/h
- Maximum differential pressure
- 16 bar
DESMI ROTAN · Model size reference
DESMI ROTAN Internal gear pump — size reference HD81 for Replacement identification for an installed HD81
Internal gear pump — size reference
HD81 identifies a size within the heavy-duty ROTAN cast-iron family. This page supports identification and replacement enquiries, including the full designation supplied to DFIN: HD81EFCHD-1M22B.
- Family
- ROTAN HD
- Nominal size reference
- 81 / DN 80 / 3 in (manual code chart)
MORE PRODUCTS FOR SIMILAR DUTIES
Compare other pump technologies
Cross-brand references that share one or more application pathways with this product.
MAAG · Product family
MAAG Industrial gear pump hydrolub for Lubricating and fuel-oil circulation
Industrial gear pump
An industrial gear-pump family for lubrication and compatible transfer duties. The selected gear, seal and pressure-protection arrangement should follow the oil or process-liquid specification.
- Family flow range
- 0.1–2,400 L/min
- Maximum differential pressure
- 120 bar
CUCCHI · Product family
CUCCHI Transfer gear pump B / MG for Oil and compressor-lubrication transfer
Transfer gear pump
B and MG are traditional cast gear-pump families for industrial liquid transfer. Material variants support different fluids; the pump size and seal arrangement need to be confirmed from the individual drawing.
- Published operating pressure
- Up to 15 bar
- Capacity selection
- See the individual size curve
CUCCHI · Product family
CUCCHI Close-coupled gear pump FT / FM for Boiler-fuel and oil transfer
Close-coupled gear pump
FT and FM offer compact motor-connected gear-pump arrangements for lubrication and compatible transfer duties. The construction variant determines the pressure capability and materials.
- FT cast-iron variant maximum pressure
- 5 bar
- FM cast-iron variant maximum pressure
- 10 bar
KSB · Product family
KSB In-line centrifugal pump Etaline for Heating, cooling and air-conditioning circulation
In-line centrifugal pump
A single-stage in-line pump family for building and industrial circulation. Its suction and discharge arrangement supports installations where an in-line layout is preferred.
- Published nominal diameter range
- DN 32–200
- Maximum family flow
- 700 m³/h
KSB · Product family
KSB End-suction centrifugal pump Etanorm for Water supply and compatible utility transfer
End-suction centrifugal pump
A standardised single-stage pump family with a back pull-out arrangement. The hydraulic and dimensional basis supports water and compatible industrial-liquid duties.
- Published nominal diameter range
- DN 25–150
- Maximum family flow
- 1,930 m³/h
KSB · Product family
KSB Chemical-process centrifugal pump MegaCPK for Chemical and petrochemical transfer
Chemical-process centrifugal pump
A horizontal chemical-process pump family with a radially split casing and back pull-out design. Material and seal variants allow the configuration to follow the specific chemical duty.
- Published nominal diameter range
- DN 25–250
- Maximum family flow
- 3,300 m³/h