Hydraulic Rotary Unions – DX and DXS Series

The Maier DX and DXS Series is a water rotary joint with mechanical seal and ball bearings, suitable for cooling water (DX and DXS) and hot water (DXS). The DXS is equipped with highly resistant ceramics-coated sealing surface for higher temperatures and speeds as well as prolonged service life.

Hydraulic Rotary Union Product Features:

  • Optimized cross-sections of housing connections thanks to separate one way flow and two way flow versions
  • Easy to repair
  • Safe sealing even in applications witth adverse conditions
  • Brass housing, cast housing consisting of two parts for DN 100 and larger
  • Chrome Steel rotor and counter-running surfaces, DXS Series feature counter-running surfaces made of metal ceramics
  • Compact mechanical seal, DN 100 and larger as well as DXSB equipped with easy-to-replace rotor seal
  • Factory-lubricated and maintenance-free (up to 176 °F) bearings, easily accessible lubrication point for higher temperatures


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