Fluid handling – With lock or seal – Locks against rotary motion
Patent
1984-04-05
1985-08-13
Scott, Samuel
Fluid handling
With lock or seal
Locks against rotary motion
70179, 70180, F16K 3500
Patent
active
045343799
ABSTRACT:
A locking frame for a ball valve consists of a sheet metal stamping folded into an enclosure having upper and lower plates to partially surround a part of the operating handle and the nut which secures the handle. The handle is keyed to the valve stem and engages body flanges to limit travel to valve open and valve closed positions. The frame is also fitted over the valve stem and includes tabs which engage the flanges to position same and to prevent rotation thereof. The upper plate is folded to a position parallel to the lower plate after assembly and includes a depending tab to further enclose the nut to prevent tampering. A pair of holes in the upper and lower plates are thus in registry and the shackle of a padlock may be passed therethrough to prevent movement of the handle from the valve open and valve closed positions.
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Balazs Joseph B.
Parker-Hannifin Corporation
Price Carl D.
Scott Samuel
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