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Air-Cooled Hot Oil Centrifugal Pump

Product Introduction The Series is a heavy-duty centrifugal pump specifically engineered for the continuous circulation of high-temperature thermal oils in industrial heat transfer systems. Its standout feature is a robust air-cooled design, which effectively protects the pump’s critical components from extreme temperatures without the need for external cooling water. This makes the pump a highly reliable, low-maintenance, and efficient solution for providing process heat across a wide range of industries, from chemical manufacturing to food processing.


Design Philosophy & Construction The pump is built to withstand the rigors of constant high-temperature operation, with a design focused on heat dissipation and mechanical stability.

  • Air-Cooled Bearing Housing: The core of the pump’s design is its extended, finned bearing housing. A long shaft creates a significant distance between the hot pump casing and the bearings. The intermediate housing is designed with large cooling fins that use natural convection to dissipate heat into the ambient air, effectively reducing the temperature at the seal and bearings to a safe operating level.
  • No External Cooling Needed: This intelligent air-cooled system eliminates the cost and complexity of external water cooling circuits, removing potential leak points and saving on utility costs.
  • High-Temperature Mechanical Seal: The pump is fitted with a specialized mechanical seal designed for hot oil service. These seals use durable, heat-resistant materials like Silicon Carbide and flexible graphite to provide a reliable seal despite the high temperatures and low viscosity of thermal fluids.
  • Robust, Centerline-Mounted Casing: The pump’s casing is built for heavy-duty service and is typically centerline-mounted. This ensures that as the casing heats up and expands, the pump shaft remains perfectly aligned, preventing excessive wear on the bearings and seal.

Key Features & Benefits

  • Reliable High-Temperature Service: Engineered to continuously and safely handle thermal fluids at temperatures up to 350°C (660°F).
  • Efficient Air-Cooling: The self-cooling design requires no external cooling water, simplifying installation, reducing operating costs, and increasing system reliability.
  • Extended Seal and Bearing Life: The effective heat dissipation system ensures that bearings and the mechanical seal operate at a much lower temperature, leading to longer service life and reduced maintenance.
  • Durable & Stable Operation: The heavy-duty construction, rigid shaft, and centerline mounting provide exceptional stability and durability for demanding 24/7 heat transfer applications.
  • Energy Efficient: The optimized hydraulic design ensures efficient fluid circulation, minimizing the energy consumption of the heating system.

Common Applications The pump is the standard choice for circulating heat transfer fluids in a vast array of industries:

  • Thermal Oil Heater Systems: The primary circulation pump in closed-loop heat transfer systems.
  • Chemical & Pharmaceutical Industry: Providing precise process heat for reactors, reboilers, and dryers.
  • Plastics & Rubber Manufacturing: Supplying heat for extruders, molding machines, and presses.
  • Food Processing: Circulating hot edible oils for large industrial fryers and baking ovens.
  • Textile & Paper Industries: Providing high-temperature heat for drying and calendering processes.
  • Wood Processing: Supplying heat for board presses and laminating equipment.