Thermal Oil Circulation Pump
RY series centrifugal hot oil pump for heat transfer fluid circulation at -20°C to 350°C. No cooling water system required — natural air-cooling structure. Suitable for chemical, textile, food, petroleum and pharmaceutical industries.
The RY series thermal oil circulation pump is a centrifugal pump designed for heat transfer fluid (HTF) at temperatures from -20°C to 350°C. It uses a natural air-cooling fin structure — no external cooling water system required. Flow rate: 1–500 m³/h, pressure: 1–12.5 bar. Suitable for thermal oil, heat conduction oil, and compatible heat transfer fluids. Not suitable for water, chemicals, or abrasive media.
| Parameter | Value |
| Pump Type | Centrifugal, horizontal, single-stage |
| Flow Rate | 1–500 m³/h |
| Temperature Range | -20°C to 350°C |
| Pressure | 1–12.5 bar |
| Medium | Thermal oil / heat transfer fluid (HTF) |
| Sealing | Packing seal with heat-resistant auxiliary seal |
| Cooling | Natural air-cooling fins — no cooling water required |
RY series centrifugal oil pump is typically driven by an electric motor, they connect to the pump body via a flexible coupling. A flexible spacer coupling can also be installed, allowing the entire pump bracket to be removed from the base plate without disassembling the pump casing or motor. Additionally, the coupling is protected by a guard to prevent damage from external factors.
RY series thermal oil pump is an ideal choice for transporting high-temperature liquids. Primarily designed for conveying weakly corrosive, solid-particle-free fluids at temperatures ≤350°C, it serves thermal energy transfer systems across diverse industries including petrochemicals, rubber and plastics, pharmaceutical manufacturing, textile printing and dyeing, road construction, food processing, and woodworking.
- It is supported by dual ball bearings, lubricated with oil at the front end and grease at the rear end. An oil guide tube is installed in the middle, allowing real-time observation of seal condition and heat transfer oil recovery status.
- The single-stage, single-suction cantilevered foot support structure features axial suction and vertical discharge center, and the motor is mounted on the same base, simplifying maintenance and installation.
- The unit employs a combination of packing seals and mechanical seals to ensure zero leakage operation.
| Model | Q (m³/h) | Head (m) | Shaft Power (kW) | Efficiency (%) | Rev (r/min) | Motor (kW) |
| 20-20-100 | 1 | 20 | 0.09 | 26 | 2800 | 0.75 |
| 20-20-125 | 1.5 | 22 | 0.22 | 30 | 2800 | 0.75 |
| 25-25-160 | 3 | 27 | 0.53 | 30 | 2900 | 1.5 |
| 32-32-160 | 6 | 28 | 0.85 | 50 | 2900 | 1.5 |
| 32-32-200 | 6 | 50 | 2.37 | 45 | 2900 | 3.0 |
| 40-25-160 | 10 | 28 | 1.72 | 45 | 2900 | 2.2 |
| 50-32-160 | 12.5 | 30 | 1.90 | 57 | 2900 | 3 |
| 50-32-200 | 12.5 | 50 | 3.78 | 45 | 2900 | 5.5 |
| 50-32-200 | 18 | 40 | 3.95 | 50 | 2900 | 5.5 |
| 50-32-200A | 16 | 32 | 3.35 | 42 | 2900 | 4 |
| 50-32-250 | 12.5 | 80 | 6.2 | 44 | 2900 | 11 |
| 50-32-250 | 18 | 70 | 7.6 | 45 | 2900 | 11 |
| 50-32-250A | 16 | 60 | 6.2 | 42 | 2900 | 7.5 |
| 65-50-160 | 20 | 32 | 3.17 | 55 | 2900 | 5.5 |
| 65-40-200 | 25 | 50 | 5.87 | 58 | 2900 | 7.5 |
| 65-40-200 | 30 | 48 | 6.3 | 62 | 2900 | 7.5 |
| 65-40-200A | 25 | 35 | 4.0 | 59 | 2900 | 5.5 |
| 65-40-250 | 25 | 80 | 10.3 | 53 | 2900 | 15 |
| 65-40-250A | 20 | 51 | 5.67 | 49 | 2900 | 7.5 |
| 65-40-315 | 25 | 125 | 18.9 | 45 | 2900 | 30 |
| 65-40-315A | 22.5 | 100 | 15.3 | 40 | 2900 | 22 |
| 80-50-200 | 40 | 52 | 8.85 | 64 | 2900 | 15 |
| 80-50-200 | 50 | 50 | 9.7 | 70 | 2900 | 15 |
| 80-50-200 | 60 | 46 | 11.0 | 70 | 2900 | 15 |
| 80-50-200A | 45 | 40 | 7.8 | 63 | 2900 | 11 |
| 80-50-200B | 40 | 32 | 6.37 | 55 | 2900 | 7.5 |
| 80-50-250 | 50 | 80 | 18.7 | 58 | 2900 | 22 |
| 80-50-250 | 60 | 72 | 19.6 | 60 | 2900 | 22 |
| 80-50-250A | 43 | 60 | 12.8 | 55 | 2900 | 18.5 |
| 80-50-315 | 50 | 125 | 30.4 | 56 | 2900 | 37 |
| 80-50-315A | 45 | 100 | 23.6 | 52 | 2900 | 30 |
| 100-65-200 | 80 | 53 | 16.5 | 70 | 2900 | 22 |
| 100-65-200 | 100 | 50 | 18.4 | 74 | 2900 | 22 |
| 100-65-200A | 94 | 44 | 16.00 | 70 | 2900 | 22 |
| 100-65-200B | 87 | 38 | 13.8 | 65 | 2900 | 15 |
| 100-65-200C | 80 | 32 | 11.8 | 59 | 2900 | 15 |
| 100-65-250 | 80 | 85 | 28.9 | 64 | 2900 | 37 |
| 100-65-250 | 100 | 80 | 32.06 | 68 | 2900 | 37 |
| 100-65-250A | 95 | 72 | 29.00 | 64 | 2900 | 37 |
| 100-65-250B | 90 | 65 | 26.2 | 61 | 2900 | 30 |
| 100-65-315 | 80 | 130 | 45 | 63 | 2900 | 75 |
| 100-65-315 | 100 | 125 | 50.06 | 68 | 2900 | 75 |
| 100-65-315A | 95 | 113 | 45.23 | 64 | 2900 | 55 |
| 125-100-200 | 200 | 50 | 35.40 | 77 | 2900 | 45 |
| 125-100-200A | 178 | 40 | 26.60 | 73 | 2900 | 37 |
| 125-100-250 | 200 | 70 | 47.00 | 80 | 2900 | 55 |
| 125-100-250A | 190 | 63 | 41.60 | 78 | 2900 | 55 |
| 150-150-200 | 350 | 50 | 60 | 80 | 2900 | 75 |
⬆ Scroll for all 48 published models. Models shown as published by the manufacturer (Q in m³/h, H in m). Nominal duty point; motor selection may vary by duty.
What is the difference between RY pump and a standard centrifugal pump?
The RY series is specifically designed for high-temperature thermal oil — it uses heat-resistant shaft seals, a natural air-cooling fin structure to protect the bearing housing, and materials rated for continuous operation at up to 350°C. A standard water pump would fail rapidly at these temperatures.
What data do I need to provide for a quotation?
Required flow rate (m³/h), operating temperature (°C), system head or pressure (m / bar), thermal oil type and viscosity at operating temperature, motor voltage, and installation orientation.
What is a thermal oil circulation pump used for?
It circulates heat transfer oil through heaters, heat exchangers and process equipment where controlled high-temperature heat transfer is required.
What temperature can the RY thermal oil pump handle?
The published range on this site is -20°C to 350°C. Final selection should confirm the heat transfer fluid, seal arrangement and operating conditions.
Does the RY thermal oil pump require cooling water?
The RY design presented here uses natural air-cooling fins and does not require an external cooling-water system under its stated operating conditions.
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