Liveload assembly for rotary or reciprocating shaft packing

Details Liveload assembly for rotary or reciprocating shaft packing Liveload assembly for rotary or reciprocating shaft packing

1988-12-20

1991-06-18

Wilson, Neill R.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277186, 267162, 411368, 411544, B65D 5300, E21B 3300, F16J 1500, F16B 4302

Patent

active

050244531

ABSTRACT:
A liveload assembly including an stack guide, compressed belleville washers stacked inside the stack guide and a retainer to hold the compressed washers in the stack guide. A longitudinal slot in the wall of the stack guide permits visual checking of the compression provided by the liveload assembly on the gland follower of the valve or pump. The rotary or reciprocating shaft of a valve or pump is liveloaded by placing the liveload assembly over the bolt securing the gland follower to the stuffing box. A nut is threaded on the bolt until it contacts the washers and the retainer removed.

REFERENCES:
patent: 3873079 (1975-03-01), Kuus
patent: 4394872 (1983-07-01), Schogl
patent: 4571133 (1986-02-01), Lindow
patent: 4651981 (1987-03-01), Passiniemi
"Valve Stem Packing Improvements", Electric Power Research Institute, EPRI NP-4255, Feb. 1986.

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