Choke valve safety device

Details Choke valve safety device Choke valve safety device

1991-05-03

1991-11-19

Walton, George L.

Fluid handling

With repair, tapping, assembly, or disassembly means

Assembling, disassembling, or removing cartridge type valve

137312, 137382, 166 91, 285 92, 285924, 411374, 411429, 411910, F16K 3502, F16K 5100

Patent

active

050657879

ABSTRACT:
A choke valve safety device to prevent unthreading of the choke bonnet nut until internal pressure has been vented, comprising a U-shaped bracket that fits over a tool-engaging portion of the nut, and a bracket support securable to the choke body only in the correct position.

REFERENCES:
patent: 1814412 (1931-07-01), Rutter
patent: 2943869 (1960-07-01), Nordin
patent: 3035605 (1962-05-01), Ninnelt
patent: 3119449 (1964-01-01), Price
patent: 3960047 (1976-06-01), Liffick
patent: 4337788 (1982-07-01), Seger
patent: 4503878 (1985-03-01), Taylor
patent: 4705062 (1987-11-01), Baker
patent: 4921281 (1990-05-01), Taylor
patent: 4923221 (1990-05-01), Taylor
patent: 4926898 (1990-05-01), Sampey

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