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Series DX

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DX series rotary head

The DX series includes industry-leading equipment designed for precise control and regulation of liquids and gases in critical operating conditions. This series is characterized by high reliability, resistance to extreme temperatures and pressure conditions.

  • Cooling water, (DXS hot water, vacuum) or heat transfer oil
DXSB series
  • The inner tube is inserted in the rotor and rotates with it
  • Rotor seal is replaceable
  • Higher speeds are possible
DXSA series
  • See DXSB series, but DXSA is a reinforced version for extreme cases 
  • There is a seal between the inlet and outlet

✅ Typical areas of application: pharmaceutical industry, energy industry, chemical and petrochemical industry

Technical data

  • The body: Made of brass, from DN 100 the two-piece body is made of steel
  • Rotor: The rotor seal is made of chrome steel; for DXS, of plated ceramic
  • Compact sliding seal: From DN 100 and on DXSB easily replaceable rotor seal
  • Two ball bearings: For the 300 series, tapered roller bearings for higher demands; bearings are maintenance-free up to 80 °C; for higher temperatures, they have easily accessible lubrication points

Connection to the rotating pressure system by:

  • Standard threaded connection for DN 10-80 with right or left-hand G/BSP thread (ISO 228). Sealing and centering cone on threaded outlet
  • Reducers for NPT and other threads can be supplied
  • K-flange and conical inner ring
  • Fixed flanges (F) are available for DXSB series and DN 100-150
  • For DN 10-80 radial and axial connection of the body with right-hand thread according to ISO 228. Reductions for NPT and other threads can be supplied. From DN 100 onwards, connection of bodies with flange according to DIN 2633, PN 16.
  • Series DXSB and DXS DN 100-150 with G 1/2 vent screws
  • The thread for the fixed inner pipe (DX/DXS series 2...) is always right-handed, even for rotors with left-hand thread
  • Slip sleeves for rotating inner tube as slot seals. In the DXSA series, the rotating inner tube (not included) is statically mounted in the rotor, additional seals are available for precise separation of forward and reverse travel
  • Anti-rotation locking by means of a locking pin, from DN 100 by means of a fork