Parker Hydraulic Group
ST Series Water Oil Coolers

Key Features

  • Shell & tube construction
  • High flow capability and low back pressure
  • Easily fits into existing footprint
  • Several tube materials available, including Copper, Copper Nickel, and Stainless Steel 
  • Less prone to contamination and easy to clean
  • High efficiency versions are available.

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The Parker ST Series offers up to 2000hp of cooling capacity. The shell & tube construction allows for high flows and several types of fluids, including sea water. There are several port size and tube material options. These high quality water oil coolers are 100% tested and subjected to rigorous end of line test criteria.


  • Hydraulic power units
  • Lubrication systems
  • Hydraulic presses
  • Plastics machinery
  • Automotive machinery
  • Large diesel engines