Fluid handling – With repair – tapping – assembly – or disassembly means – Assembling – disassembling – or removing cartridge type valve
Patent
1990-04-27
1990-11-06
Walton, Geroge L.
Fluid handling
With repair, tapping, assembly, or disassembly means
Assembling, disassembling, or removing cartridge type valve
92128, 92130B, 92130C, 251 636, 277112, 277124, 384297, 403309, F16K 4300, F16K 31122
Patent
active
049677853
ABSTRACT:
A valve actuator is disclosed which is encased in a housing with a bonnet mounted at one end and an end cap on the other end. Inside, an actuator shaft is slidably mounted through a bore on a guide connected to the bonnet. A piston is slidably mounted with respect to the guide and creates a variable-volume cavity between itself and the guide. The shaft is connected to the piston by virtue of a disk which, when bolted down to the top of the shaft, puts a preload in the spring. A connecting member is placed into contact with the disk and the piston once the spring has been preloaded. The connecting member is segmented and fits between spacers which hold the spring at a distance from the disk and allow insertion of the connecting member after preloading of the spring. The spring bears on the connecting member. Pressurization of the cavity results in an overcoming of the spring force and movement of the shaft between a first and second position. The guide has a liner which is replaceable to effectively change the bore size in the guide, allowing the actuator to accommodate different shafts having a variety of diameters, depending upon the application.
REFERENCES:
patent: 2733041 (1956-01-01), Crookston
patent: 3168320 (1965-02-01), Sneed
patent: 3379405 (1968-04-01), Natho
patent: 3528668 (1970-09-01), Barton
patent: 4129283 (1978-12-01), Taylor
patent: 4158511 (1979-06-01), Herbenar
patent: 4423748 (1984-01-01), Ellett
patent: 4445424 (1984-05-01), Foster et al.
patent: 4523515 (1985-06-01), Smith
patent: 4744386 (1988-05-01), Frazer
Baker Hughes Incorporated
Rosenblatt Steve
Walton Geroge L.
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