A valve assembly including a valve body with an inlet port and an outlet port, a flow passage and a valve element disposed within the flow passage, an actuator and a lockout mechanism configured to maintain the position of the valve assembly in an opened position or a closed position. The lockout mechanism can include at least one screw.

A pipe stopper includes an expandable stopper body defining a stopper cavity and configurable in an expanded configuration and a contracted configuration; a pressure assembly comprising a pressure housing and a piston, the piston slidably engaged with a housing cavity of the pressure housing, the piston operatively connected to the expandable stopper body; and a locking assembly comprising a locking rod and a locking device, a lower end of the locking rod disposed within the housing cavity, the locking rod further comprising a rod engagement mechanism, the locking device comprising a locking engagement mechanism; wherein the locking device is configurable in a locked configuration and an unlocked configuration, and wherein, in the locked configuration, the locking engagement mechanism engages the rod engagement mechanism to lock the expandable stopper body in the expanded configuration.

A method of using a pipe stopper to stop fluid flow through a pipeline includes providing the pipe stopper, the pipe stopper comprising an expandable stopper body and a pressure assembly, the expandable stopper body configurable in an expanded configuration and a contracted configuration, the pressure assembly configurable in an open configuration and a closed configuration and comprising a housing cavity; lowering the expandable stopper body of the pipe stopper into a pipe channel of the pipeline in the contracted configuration; orienting the pressure assembly in the open configuration, wherein an upper portion of the housing cavity is in fluid communication with an atmosphere external to the pipeline and a lower portion of the housing cavity is in fluid communication with the pipe channel; and biasing the expandable stopper body to the expanded configuration to block fluid flow through the pipe channel.

Disclosed are various embodiments of a lockable toilet fill valve and methods according to the present invention. In one embodiment, a toilet fill valve includes a float and arm assembly. The toilet fill valve is closed when the float and arm assembly is disposed in a first position. The toilet fill valve is open when the float and arm assembly is disposed in a second position. A side lever is associated with the float and arm assembly. The side lever includes an unlock position and a lock position. The side lever includes a hook that engages the float and arm assembly to restrict movement of the float and arm assembly when in the lock position and allow movement of the float and arm assembly when in the unlock position.

Disclosed are various embodiments of a lockable toilet fill valve and methods according to the present invention. In one embodiment, a toilet fill valve includes a float and arm assembly. The toilet fill valve is closed when the float and arm assembly is disposed in a first position. The toilet fill valve is open when the float and arm assembly is disposed in a second position. A side lever is associated with the float and arm assembly. The side lever includes an unlock position and a lock position. The side lever includes a hook that engages the float and arm assembly to restrict movement of the float and arm assembly when in the lock position and allow movement of the float and arm assembly when in the unlock position.

An operating system for switching a coker switch valve to drum A, drum B, and bypass. The system has a shear pin linkage between the actuator and the valve stem and a position indicator independent of the actuator, to maintain functionality in the event of shear pin failure; and/or lockout functionality to prevent an inadvertent switch to bypass when switching between drum A and drum B and to lock down bypass mode to prevent an inadvertent switch from bypass to an open drum.

The present invention discloses a butterfly valve including: a valve body, an inner valve seat, a valve core, a valve stem and at least one positioning ring. The valve body has an inlet end, an outlet end, and an axial passage communicating with the inlet end and the outlet end. A valve stem mounting hole is provided between the inlet end and the outlet end in the valve body. The valve body further is provided with a valve seat mounting portion in the axial passage at a position corresponding to the valve stem mounting hole. The inner valve seat is fixedly mounted to the valve seat mounting portion, which is cylindrical and is provided with radial through hole in the side wall corresponding to the valve stem. the valve core is plate-shaped and mounted in the inner valve seat, a radial through hole is provided therein. The valve stem passes through the valve stem mounting hole, the radial through hole of the inner valve seat and the radial through hole of the valve core. The positioning ring is mounted in the valve body at an axial side of the inner valve seat and form a hermetic connection with the inner valve seat. The butterfly valve of this invention has good tightness

A control valve assembly includes a valve body defining an inlet, an outlet and a fluid flow pathway therebetween. A ball valve is positioned within the fluid flow pathway and includes a rotatable ball having an inlet opening, an outlet opening and a flow pathway therebetween, an upstream seat ring positioned at an inlet side of the ball, and a downstream seat ring positioned at a downstream side of the ball, the seat rings being configured to substantially seal off fluid flow between upstream and downstream sides of the ball except through the ball fluid flow pathway. At least one of the upstream and downstream seat rings is a dynamic sealing seat ring. A retainer ring is positioned between the dynamic sealing seat ring and a portion of the rotatable ball to substantially prevent deformation of a portion of the dynamic sealing seat ring in a direction toward the ball.

A valve gate assembly with a eutectic implement configured to degrade in response to a force imparted along a non-parallel load path. The unique architecture employed for various embodiments ensures a non-parallel load path is employed in triggering the shift in position for a valve gate. This enhances the integrity of the eutectic implements such that a wider variety of valve gate assembly dimensions may be utilized. This, in turn, allows for such assemblies to be utilized with larger production line volumes without compromise to safety measures afforded by such safety valves.

A valve gate assembly with a eutectic implement configured to degrade in response to a force imparted along a non-parallel load path. The unique architecture employed for various embodiments ensures a non-parallel load path is employed in triggering the shift in position for a valve gate. This enhances the integrity of the eutectic implements such that a wider variety of valve gate assembly dimensions may be utilized. This, in turn, allows for such assemblies to be utilized with larger production line volumes without compromise to safety measures afforded by such safety valves.