Valve Lock

摘要

An improvement for a valve of a type having a stem assembly, a rigid bonnet, and a valve base comprised of a lock cavity formed in the bonnet and adapted to receive a lock mechanism therein, the lock mechanism including a locking pin that is positionable between a locked position and an unlocked position. At least one notch or aperture is formed in the stem assembly and is adapted to receive the locking pin of the lock mechanism when in the locked position. In one embodiment, a bonnet sleeve projects away from the lock cavity and is adapted to receive a locking clasp used with auxiliary padlocks. In another embodiment, the improvement is added to an existing valve as a retrofit product by replacing or modifying the bonnet and stem assembly. In another embodiment, the improvement is built into the valve during manufacturing and delivered as a complete solution.

主权项

1. An industrial valve with an integrated lock comprising:
a) a housing having a fluid inlet and fluid outlet, an opening for a stem that controls the state of the valve and a lock body portion; b) a valve plate within the housing having at least two operationally positional states, the at least two states including open and closed with respect to fluid flow c) a stem operatively coupled to the valve plate and extending outside the housing through the opening for a rod;the housing, valve plate, and rod mutually configured such that changing the position of the valve gate between the at least two states is engendered by external manipulation of the rod;
d) a lock within the lock body portion having a pin slideably supported within the lock body along the axis of the pin, the axis being generally at a right angle to the stem; andwhere the stem has at least one aperture or one notch, located and oriented to be proximate to the pin and aligned with the axis of the pin when the valve is in at least one of the at least two positional states; the alignment and proximity such that when the pin is slid towards the rod, the pin engages the aperture thereby preventing the motion of the rod that engenders a change of state of the valve.