Assembly security lock for shut-off valve

Details Assembly security lock for shut-off valve Assembly security lock for shut-off valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 35/06 (2006.01) F16K 35/10 (2006.01)

Patent

CA 2344527

An automatic security lock assembly for a gas shut-off valve is described. A lock disk is secured to the head of the gate stem. The disk has a hole alignable with the flange of the head of the gate stem and also with the hole in the flange of the valve body. When all three holes are aligned, when the head is at a shut-off position, a tamper-proof pin-lock is engaged through the holes. The lock can only be opened using a special key which is available to the gas utilities.

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