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ROTARY UNION ® transfers media (water, steam, air, oil, hydraulic fluid, etc) from a stationary source to rotating machinery, such as a drum or an indexing table. They are used in process industries such as; paper, printing, rubber and plastics, textile and chemical. Rotary Unions are also used on cranes, machine tools and many other applications. Duff-Norton Rotary Unions are used to provide heating or cooling media like steam, hot oil, water or coolant to control the surface temperature of a drum or roll, to transfer air or hydraulic fluid to moving components or to add fluids to mixers while in motion. Rotary unions, rotary joints and rotating joints ranging up to 750 psi and up to 5,000 RPM are available.

Water, Air, Hydraulic Fluid

2,900 PSI


250º F

1,500 RPM

1/4" to 1" NPT
BSP & BSPP Available

Nickel Plated Steel
Also available in all stainless steel with a hardened ceramic shaft for higher speed and longer life

Two Port Design

*See performance charts for details

Features & Benefits
  • Two Port Design - Features two ports for use in a wide variety of applications
  • Corrosion Resistant - Nickel plated steel for corrosion resistance. Also available in all stainless steel and with a hardened ceramic shaft for higher speeds and longer life
  • Medium Speed & Medium Pressure Capable - Offers the ability to use medium speed and pressure simultaneously
  • No Cross Contamination - The 1600 Series Rotary Union can be used with two dissimilar fluids. All circuits are individually sealed eliminating cross contamination