Valve spindle sealing arrangement

Details Valve spindle sealing arrangement Valve spindle sealing arrangement

1979-10-15

1982-03-02

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277114, 251214, F16K 3150

Patent

active

043175732

ABSTRACT:
A sealing arrangement for sealing the lead-through of a valve spindle through the cover portion of a valve. The spindle is connected to a movable valve body. There is a radially supported elastic stuffing surrounding the spindle and an attachment member axially supporting the stuffing. In the inner space of the valve there is a stationary stop member for the valve body. The stop member prevents axial movement of the valve body, beyond the fully open position of the valve. The reaction force induced in the stop member by the valve body influences the stuffing via the spindle and causes an increased axial compression in the stuffing. Thereby, the stuffing, due to its elasticity, is pressed more firmly against its radial support, and thus, gives a better sealing effect in the fully open position of the valve.

REFERENCES:
patent: 473554 (1892-04-01), Holly
patent: 1698439 (1929-01-01), Johnson
patent: 1699036 (1929-01-01), Welsh
patent: 2912266 (1959-11-01), Nordell
patent: 4087075 (1978-05-01), Nechanicky

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