Metal working – Means to assemble or disassemble – Valve applying or removing
Patent
1998-06-12
2000-02-15
Watson, Robert C.
Metal working
Means to assemble or disassemble
Valve applying or removing
29252, 29267, B23P 1904
Patent
active
060238267
ABSTRACT:
A valve packing compression apparatus and method of use therefor are disclosed for compressing packing rings into a stuffing box of a valve bonnet which has a gland follower. The compression apparatus includes a base plate configured to support and consistently position the valve bonnet. A rocker arm is pivotally attached to the base plate. A hydraulic ram is also attached to the base plate and extends to contact one end of, and thereby pivot, the rocker arm. The opposite end of the rocker arm includes a pair of tines which straddle a yoke support arm of the valve bonnet and align with the gland follower. Hydraulic fluid is provided to the ram by a hydraulic pump through a pressure regulator. When the hydraulic ram is activated to extend, the tines contact the gland follower, thereby compressing the packing rings a predetermined amount.
REFERENCES:
patent: 3227438 (1966-01-01), Sequin
patent: 4096608 (1978-06-01), Lagerstedt
patent: 4673173 (1987-06-01), Shochi et al.
patent: 4686897 (1987-08-01), Frank
patent: 4721293 (1988-01-01), Schron et al.
patent: 5452885 (1995-09-01), Beere
Haritonoff Boris W.
Harrelson, III Albert L.
Tanner T. Scott
Garlock Inc
Watson Robert C.
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