초록 ▼

A valve lock for valves wherein the valve stem is coupled to a valve actuator shaft and there is a spacing between the valve and valve actuator. A locking member is slidably receivable in the spacing and fixed against rotation so that a locking slot in the locking member engages a locking segment of

A valve lock for valves wherein the valve stem is coupled to a valve actuator shaft and there is a spacing between the valve and valve actuator. A locking member is slidably receivable in the spacing and fixed against rotation so that a locking slot in the locking member engages a locking segment of the interconnected valve stem and valve actuator shaft. The locking member, in turn, can be releasably locked to prevent unauthorized or unintended use of the valve.

대표청구항 ▼

A valve locking system for locking a valve means located in a flow conduit in an open or closed position where the valve means has a valve stem shaft coupled to a valve actuator shaft in a valve actuator means by coupling means and one of said valve means and said valve actuator means has a shaft wi

A valve locking system for locking a valve means located in a flow conduit in an open or closed position where the valve means has a valve stem shaft coupled to a valve actuator shaft in a valve actuator means by coupling means and one of said valve means and said valve actuator means has a shaft with a non-circular cross section and with a locking flat surface disposed normal to a radial axis for said shaft and where the valve actuator means and valve means are connected to a support base member with the coupling means extending through said support base member, said locking system including: shim members disposed between said support base member and said one of said valve means and said valve actuator means for defining a width spacing and for slidably receiving a locking member and for defining facing surfaces with a transverse length spacing which extends to either side of said shaft, said width spacing and said length spacing defining a cross sectional area; and said locking member being sized in cross-section for sliding reception in the cross-sectional area defined by said width spacing and said length spacing, said locking member having a slot in one end where said slot has a locking flat surface for complementary engagement with said locking flat surface on said shaft with a non-circular cross-section for locking said shaft against rotation.