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Return-Line Cooling

Return-line cooling places the heat exchanger in the low-pressure return line, allowing fluid to be cooled before it re-enters the reservoir. This approach lowers the overall system temperature, improves pump inlet conditions, reduces aeration and foaming, and significantly extends the life of hydraulic oil and components.

  • Low-Pressure Operation: Ideal placement in the return line where pressures are typically under 100 psi, enabling cost-effective and efficient cooling.
  • System-Wide Benefits: Reduces reservoir temperature, protects the pump from hot oil, and improves overall hydraulic efficiency.
  • Recommended Series: Compact and economical models such as the AOR Series, AOC Series, M Series, and RM Series are excellent for return-line applications.
  • Air Cooled Designs: No water required – perfect for both industrial and mobile hydraulic systems.
  • Key Features: High-efficiency turbulators for excellent heat transfer at lower flows, optional internal bypass valves, and rugged construction for long service life.
  • Benefits: Lower system temperatures, extended fluid life, reduced component wear, and improved machine reliability.
Air Cooled:
Return-Line Duty
  • Compact fin-tube & bar-plate designs
  • Low-pressure drop
  • Internal bypass options
Air Cooled Return Line Cooling
Water Cooled:
Shell & Tube
  • High heat rejection capacity
  • Low pressure drop on return line
  • Easy servicing
Water Cooled Return Line Cooling

Return-Line Cooling Solutions

Return-line cooling is a highly effective strategy for hydraulic systems. By cooling the fluid after it has performed work but before it returns to the reservoir, TTP heat exchangers lower the overall system temperature, improve pump inlet conditions, reduce aeration, and dramatically extend the service life of hydraulic oil and components.

Typical Applications: Industrial hydraulic power units, injection molding machines, mobile equipment, press circuits, and any system where return-line temperatures are elevated.

Key Benefits

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Quotes - Engineering - Sales