Valve lockout
AssigneeDeZURIK, Inc.
InventorSteven K. Neu
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to valve lockout systems, including valve lockout systems for use with an actuator and butterfly valves. The lockout system allows controlled access to operation of the valve, either to prevent intentional or unintentional operation of the valve. Thus, the lockout system prevents the unauthorized opening or closing of the valve. The lockout system includes a lockout plate in which a lockout bar is positioned. The lockout bar includes a surface containing a recess. Depending upon the location of the recess the valve shaft can be opened or closed.
Claims9
A valve lockout assembly, the valve lockout assembly comprising:
- a) a plate;
- b) a lockout bar retained by the plate, the lockout bar comprising a recess;
- c) a valve shaft configured to rotate between an open position and a closed position;
- wherein the lockout bar is retained by the plate in at least two positions:
- a first position where the recess is not aligned with the valve shaft and valve shaft rotation is prevented, and
- a second position wherein the recess is aligned with the valve shaft and valve shaft rotation is not prevented;
- wherein the lockout bar is configured to prevent rotation of the valve shaft while the valve shaft is in the open position and the closed position.
Dependencies are inferred from the claim text.