DSTI's success in providing fluid transfer solutions is based on a wide range of proven experience with rotary sealing technology, continual design innovation, and a priority for constant communication with its customers to ensure their project's success.

DSTI's fluid swivels provide reliable hydraulic & abrasive service for top drive drilling applications.

Rotary Unions & Swivels For Top Drives

Fluid Swivel Solutions For Top Drive Drilling Systems

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Designed for distribution of hydraulic power for rotating pipe handlers, DSTI's fluid swivel & rotary union products are an integral component for top drive drilling systems. Additionally, DSTI provides swivels for washpipe configurations for pumping drilling mud through the system.


DSTI provides fluid swivel unions for top drive systems in two key configurations:

  • Multi-passage pipe handler swivels for providing independent hydraulic lines to the pipe handler assembly used to pick and place drill string close to the downhole connection
  • Washpipe swivels used to pump high pressure abrasive medias

Top Drive Swivels:

  • Proprietary High Performance Seal Designs For Rotation Under Pressure:
    Rated To 5000+ PSI (350 BAR)
  • Integrated Bearings To Support Side Loading
  • Multiple Flow Passage & Port Size Options
  • Specialized Seals For Abrasive Media Service
  • Variety Of Flange Mounting Options
  • Engineered To Strict Customer Specifications
  • 3rd Party Inspection Certification
  • Specialized Designs for Direct Integration into Customer Equipment


For more information on fluid swivels and rotary unions for top drive drilling system, please Contact DSTI



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