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Duff-Norton's 8000 Series Steam & Hot Oil Rotary Union® 

Available in sizes ranging from 1/2" to 4", the Series 8000 is designed for operation in a variety of steam applications.  The anti-torque lug prevents rotation of the housing while in operation.  The special carbon graphite bearing is lubricated by the process fluid and requires no additional lubrication.  Series 8000HO offers the same design features as the standard 8000 Series with a special high temperatures seal ring for hot oil applications. 


Series 8000T
Series 8000T is designed specifically for the textile industry.  The Series 8000T features a hardened nickel plated shaft and stainless steel housing insert.  The heavy duty spring ensures sealing in low pressure and light vacuum applications.  The 8000T is field repairable and features a two year warranty in applications not exceeding 150 psi at 378°F, and with maximum speed (RPM) x pressure (PSI) = 25,000.

Operating Parameters

Max. Water Pressure 250 psi 17 bar
Max. Water Temp 375°F 190°C
Max. Steam Pressure 150 psi 10.2 bar
Max. Temp Steam 375°F 190°C
Max. Hot Oil Pressure 100 psi 6.8 bar
Max. Hot Oil Temp 375°F 190°C
Max. Air Pressure 100 psi 6.8 bar
Max RPM NPT 700 700
Max RPM MT 1500 1500
Max RPM Air 320 320
8000 Series Single Flow
8000HO Series Single Flow
8000 Series Dual Flow

8000HO Series Dual Flow  

8000 Series Performance Chart

8000HO Series Performance Chart

8000 Series Steam Repair Parts 1/2" to 1 1/4"

8000 Steam Repair Parts 1 1/2" to 4" 

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