초록 ▼

A lever-operated rotary valve having a rotary body for permitting fluid flow therein includes a locking device for selectively locking and unlocking the operating handle such that the operating handle of the rotary valve can be locked in a plurality of predetermined positions. The operating handle o

A lever-operated rotary valve having a rotary body for permitting fluid flow therein includes a locking device for selectively locking and unlocking the operating handle such that the operating handle of the rotary valve can be locked in a plurality of predetermined positions. The operating handle of the rotary valve can be oriented in any one of a plurality of positions and locked in that position without requiring the removal of the locking device. The locking device is an L-shaped member which fits on the stem of the rotary valve and includes aligned holes for receiving a padlock so that the locking device and handle are locked together.

대표청구항 ▼

A rotary valve comprising: a valve body having a first bore therein for fluid flow, said valve body comprising a flange having a stop post; a stem extending into a second bore in said valve body; control means for controlling fluid flow in said first bore of said valve body, said control means being

A rotary valve comprising: a valve body having a first bore therein for fluid flow, said valve body comprising a flange having a stop post; a stem extending into a second bore in said valve body; control means for controlling fluid flow in said first bore of said valve body, said control means being operatively connected to said stem and being disposed in said first bore; a handle mounted on said stem for operating said control means between open and closed positions, said handle comprising an upwardly extending portion having a first hole therein; and a freely slidable valve locking member, said valve locking member defining a substantially L-shape member, one leg of said L-shape member defining a folded portion and comprising second and third holes which are aligned with each other, the other leg of said L-shape member defining an opening; wherein: the valve locking member is slidably positioned on said stem such that said stem extends through the opening of the other leg of the valve locking member; said handle is mounted on said stem above said valve locking member; said upwardly extending portion of said handle extends between the folded portion of said valve locking member; and said valve locking member is slidable about the valve stem along a distance defined by said opening between at least one locked position and at least one unlocked position; said at least one locked position occurring when an abutting surface of a periphery of said other leg of the valve locking member abuts against said stop post and the first hole on the handle is aligned with the second and third holes on the folded portion of the valve locking member for permitting a lock means to pass between said first, second and third holes so as to lock said handle and said locking member in a predetermined position; and said at least one unlocked position occurring when said first hole is not aligned with said second and third holes and the abutting surface of said other leg of the valve locking member is spaced away from said stop post thereby permitting movement of said handle.