Fluid handling – With repair – tapping – assembly – or disassembly means – Assembling – disassembling – or removing cartridge type valve
Patent
1981-02-02
1982-07-06
Walton, George L.
Fluid handling
With repair, tapping, assembly, or disassembly means
Assembling, disassembling, or removing cartridge type valve
1374546, 166 91, 251122, 251333, 251360, F16K 4300
Patent
active
043377882
ABSTRACT:
An erosion resistant control valve or adjustable choke has a body with a side inlet, an end outlet and a conical valve seat in alignment with the outlet. Downstream from the valve seat are a converging passage having a smaller taper than the valve seat, a cylindrical passage and a diverging passage. A stem aligned with the seat assembly includes a plug having a tapered seal surface near its upstream end for engaging the valve seat and a converging control surface downstream therefrom with the same taper as the converging passage. The smaller end of the control surface is in the cylindrical passage when the valve is closed and in the converging passage is fully open for localizing erosion downstream from the valve seat. A bleed passage relieves pressure from within the valve before the valve bonnet can be removed. The valve can be locked in a selected control setting by a split ring engaging the stem.
REFERENCES:
patent: 1698826 (1929-01-01), Shaffer
patent: 1831713 (1931-11-01), Knowlton
patent: 1911905 (1933-05-01), Knowlton
patent: 2014314 (1935-09-01), Defenbaugh
patent: 2091874 (1937-08-01), Neuhaus
patent: 2132199 (1938-10-01), Yancey
patent: 2943869 (1960-07-01), Nordin
patent: 3187775 (1965-06-01), Pinnell
patent: 4047695 (1977-09-01), Cleveland et al.
patent: 4281678 (1981-08-01), Claycomb
Composite Catalog, 1970-1971 Edition, Cameron Iron Works, Inc., p. 1146; Shaffer Tool Works, pp. 4342-4345.
Composite Catalog, 1970-1971 Edition, Gray Tool Company, p. 2253, I-C-I Corp., p. 2895 and Thornhill-Craver Company, pp. 4678 and 4679.
The Annin Company, Drawing Numbers 24864 and 324865, with drawing dates 4-8-60 and 2-15-57, respectively.
Smith International Inc.
Walton George L.
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