A valve assembly having a bolt with a through hole for a security wire includes at least one valve of the valve assembly mechanically coupled to a pipe or to a section of another component of the valve assembly by a coupling or by a pair of mating flanges. At least one hollow bolt is bolted through a closing bolt hole of the coupling or a joining bolt hole of the pair of mating flanges. The at least one hollow bolt accepts a safety wire run completely through the hollow bolt in a longitudinal direction of the hollow bolt and extending completely through the closing bolt hole of the coupling or the joining bolt hole of the pair of mating flanges.

A valve assembly having a bolt with a through hole for a security wire includes at least one valve of the valve assembly mechanically coupled to a pipe or to a section of another component of the valve assembly by a coupling or by a pair of mating flanges. At least one hollow bolt is bolted through a closing bolt hole of the coupling or a joining bolt hole of the pair of mating flanges. The at least one hollow bolt accepts a safety wire run completely through the hollow bolt in a longitudinal direction of the hollow bolt and extending completely through the closing bolt hole of the coupling or the joining bolt hole of the pair of mating flanges.

A valve assembly having a bolt with a through hole for a security wire includes at least one valve of the valve assembly mechanically coupled to a pipe or to a section of another component of the valve assembly by a coupling or by a pair of mating flanges. At least one hollow bolt is bolted through a closing bolt hole of the coupling or a joining bolt hole of the pair of mating flanges. The at least one hollow bolt accepts a safety wire run completely through the hollow bolt in a longitudinal direction of the hollow bolt and extending completely through the closing bolt hole of the coupling or the joining bolt hole of the pair of mating flanges.

A valve assembly having a bolt with a through hole for a security wire includes at least one valve of the valve assembly mechanically coupled to a pipe or to a section of another component of the valve assembly by a coupling or by a pair of mating flanges. At least one hollow bolt is bolted through a closing bolt hole of the coupling or a joining bolt hole of the pair of mating flanges. The at least one hollow bolt accepts a safety wire run completely through the hollow bolt in a longitudinal direction of the hollow bolt and extending completely through the closing bolt hole of the coupling or the joining bolt hole of the pair of mating flanges.

A dump handle locking device inhibits tampering with a dump handle of a tank dump valve assembly. A handle portion and a barrier portion interface with respective ends of the tank dump valve assembly. The handle portion and the barrier portion are releasably locked together through a lock mechanism, which restricts displacement of the dump handle that controls movement of a barrier covering the pipe opening. A key regulates fastening and unfastening of the lock mechanism. Consequently, the dump handle is restricted from axial displacement, remaining in a closed position. In some embodiments, handle portion is a valve handle box that encapsulates the dump handle, and barrier portion is a lock plate interfacing with pipe section in tank dump valve assembly. In other embodiments, handle portion is a valve handle cable that attaches to the dump handle, and barrier portion is a barrier cable that attaches to the pipe section.

A system includes a valve, handle, guide, arm, channel, and projection. The handle is proximate the valve and is configured to open and close the valve. The handle is in a first position when the valve is open and in a second position when the valve is closed. The guide is connected to the handle. The arm is connected to the guide. The channel is located on one of the guide or the arm, the channel having opposed first and second ends. The projection is located on the other of the guide or the arm, the projection configured to be received in the channel. Moving the projection past a location of the first end of the channel pulls the guide and the handle, thereby moving the handle from the first position to the second position. The projection can be moved toward the second end while the handle remains in the second position.