Water rotary union / for air / for oil / for vacuum
HVH 3 DSTI - Dynamic Sealing Technologies


  • Medium:

    for water, for air, for oil, for vacuum, for gas

  • Number of passages:


  • Material:

    carbon steel

  • Other characteristics:

    for high flow rates

  • Pressure:

    Min.: 0 psi

    Max.: 5000 psi

  • Rotational speed:

    Min.: 0 rpm (0 rad.min-1)

    Max.: 50 rpm (314.16 rad.min-1)


DSTI 3-passage, high-flow HVH Series rotary unions are suitable for vacuum & bidirectional pressures up to 5000 PSI [345 BAR] and feature three independent flow passages.

HVH 3-passage models consist of a heavy-duty alloy steel construction and protected ball bearings ideal for harsh, rugged outdoor applications such as heavy forestry and construction equipment.

Need to combine fluid with electrical power, signal and/or data transfer? No problem. The HVH Series rotary unions are designed to integrate directly with our standard electrical slip rings.


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