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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.
Warranty
Subject to the conditions stated herein, Duff-Norton will repair or replace, without charge, any parts proven to Duff-Norton's
satisfaction to be defective in materials or workmanship. Claims must be made within one year, except Series 9000, 8000,
and 4000 Series.

Duff-Norton will not repair or replace any parts that become unusable and show clear evidence of improper maintenance,
eccentric loading, overloading, excessive heat, chemical or abrasive wear, tampering or abuse. Equipment and accessories
not manufactured by Duff-Norton are warranted only to the extent the manufacturer warrants them, and only if the claimed
defect arose during normal use, application and service. Equipment that has been altered or modified by anyone without
Duff-Norton's authorization is not warranted by Duff-Norton. Except as stated herein, Duff-Norton makes no other
warranties, express or implied including warranties of merchantability and fitness for a particular purpose.