DESMI ROTAN · Product family
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.
EXPLORE THIS PRODUCT DOSSIER
ENGINEERING DATA
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 | 250 m³/h |
| Maximum differential pressure | 16 bar |
| Maximum speed | 1,750 rpm |
| Maximum viscosity | 250,000 cSt |
| Maximum liquid temperature | 250 °C |
IDENTIFY THE RIGHT BUILD
A family or hydraulic size is the starting reference. Include the complete nameplate designation, serial number, materials, seals, drive and connection details when ordering.
Choose the size from the required duty point, then confirm the complete construction code with DFIN. No unverified suffix combinations are listed as orderable products.
Stainless-steel construction; application-specific bushes and seals.
Provide concentration, operating temperature and cleaning chemicals. Confirm seal arrangement and material compatibility before evaluating the proposed speed.
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.
DFIN application links identify duties to discuss, subject to the specified fluid and complete pump configuration.
ROTAN documentation does not establish FDA / 3-A approval for these pumps. A food-related duty needs a separate review of hygiene, cleaning and the required documentation.
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.
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
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
Maximum family flow: 250 m³/h; Maximum differential pressure: 16 bar; Maximum speed: 1,750 rpm; Maximum viscosity: 250,000 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
Use the complete nameplate designation, serial number, connection, materials, seal arrangement and drive details. DFIN confirms the configuration before quotation rather than treating a family name as a complete order code.
APPLICATION REVIEW
Stainless-steel construction; application-specific bushes and seals. Typical duties to review include Compatible acids and alkalis, Resins, soaps and shampoo, Temperature-controlled process liquids. Provide concentration, operating temperature and cleaning chemicals. Confirm seal arrangement and material compatibility before evaluating the proposed speed.
SERVICE PLANNING
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
Use these answers to prepare a technically complete comparison and enquiry.
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.
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.
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.
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.
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.
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 CD
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.
General-purpose internal gear pump
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.
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.
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.
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.
MORE PRODUCTS FOR SIMILAR DUTIES
Cross-brand references that share one or more application pathways with this product.
Industrial gear pump
A corrosion-resistant gear-pump family for controlled transfer and dosing of process liquids. The accessible three-part housing and optional quick-clean arrangement support applications with cleaning or product-change requirements.
Industrial gear pump
Chemical-duty gear pumps with different heating arrangements. cinox can use electric heating, while therminox incorporates fluid heating or cooling channels for temperature-dependent processes.
Stainless-steel transfer gear pump
MX provides stainless-steel gear-pump options for transferring compatible process liquids. Size-specific curves and connection arrangements support selection across small and larger transfer duties.
Transfer gear pump
The S, SK and SM families use machined construction for liquid transfer, with controlled-speed arrangements for suitable metering duties. The selected material and seal arrangement govern chemical compatibility.
High-viscosity progressive-cavity drum pump
HVDP-HR uses a progressive-cavity arrangement for thicker, pumpable liquids. It provides the higher-output option within the two HVDP configurations listed here.
High-viscosity progressive-cavity drum pump
HVDP-LR addresses higher-viscosity container transfer with a lower published flow envelope than HVDP-HR. Electric and air drive arrangements are listed by the manufacturer.
Online support
Hi! How can we help?
We normally reply during China business hours.