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Ball valves can be locked in closed positions by securing a flexible, slotted band about the valve body and handle to prevent inadvertent opening.
English (United States)
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Valve Lockout Device
Ball valves can be locked in closed positions by securing a flexible, slotted
band about the valve body and handle to prevent inadvertent opening.
Referring to the figures, band 1 of flexible material, such as plastic, has holes
2 and slotted openings 3 prepunched therein as shown. The band is placed
about closed ball valve 4 with the ends 5 of transverse handle extending through
appropriately spaced slots 3. End 6 of the band is inserted in one of the narrower
slots 3 and a padlock 7 placed through a hole 2 to inhibit removal. This device
can be used to prevent tampering or untimely opening.