Bonnet nut with improved safety characteristics

Details Bonnet nut with improved safety characteristics Bonnet nut with improved safety characteristics

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 31/126 (2006.01) F16K 27/02 (2006.01)

Patent

CA 2043899

A valve assembly includes a bonnet that is captivated in a valve body stem mount by means of a threaded bonnet nut. A pair of opposed pry holes are formed in the bonnet at a point above the top of the fully seated bonnet nut. Loosening of the bonnet nut enables a bonnet that is stuck in the body stem mount to be pryed loose with a pry bar inserted in one or both of the pry holes and levered against the top of the bonnet nut. The bonnet holes also provide a visual indication of movement of the bonnet and whether there is pressure in the valve body.

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