Rotary union with selectively controlled seal

Details Rotary union with selectively controlled seal Rotary union with selectively controlled seal

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 15/54 (2006.01) B23Q 11/10 (2006.01) B23Q 11/12 (2006.01) F16J 15/38 (2006.01) F16J 15/46 (2006.01) F16L 27/08 (2006.01)

Patent

CA 2721861

A rotary union includes a non-rotating machine component having a receiving counterbore, a media channel opening, and a control channel. A housing is positioned within the receiving counterbore and has a bore and a control chamber in fluid communication with the control channel. A non-rotating seal member is slidably and sealingly disposed within the bore in the housing and has a media channel in fluid communication with the media channel opening and the receiving counterbore. The non-rotating seal member can be selectively extended or retracted within the bore of the housing, such that selective engagement of a face seal is accomplished under different operating conditions of the rotary union.

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