After watching The Fire Hero, I noticed a scene in which there was a manual valve that needed to be turned 8,000 times. What type of valve is this?

The emergency shut-off valve should be remote-controlled; in the movie it is manual, which is an unreasonable design.

The control room must have been engulfed in flames by now; we can only rely on manual controls

The valve is designed to be too easy to operate, which means it needs to be kept closed for a long time

For valves equipped with a driving mechanism, the gear ratio of the handwheel on this mechanism is very low. The handwheel is intended primarily for manual operation in case of electric failure, but not for emergency use. Based on the dimensional specifications of the valve shown in the image (platform-mounted, root valve in the tank area) and the information regarding 8,000 cycles of closing, this valve is a gate valve with a diameter ranging from DN800 to DN1000.

Remote control is no longer functional; operation must be done on-site. It can be seen from the footage that the valve operates through multiple rotations – it appears to be a gate valve. Due to its large diameter, the surface area of the valve disc is also large, which means that a greater height of movement is required for the valve stem in order to fully open or close the valve. As a result, more rotations are necessary. The footage shows that the handwheel is turning counterclockwise, indicating that the valve is in the open position. It seems that tank transfer is taking place, but carrying out such operations while there is a fire present only increases the risk. Wouldn’t it be even more dangerous if the receiving tank caught fire? In the event of a fire in a storage tank, shouldn’t the connections to pipelines and other tanks be severed first?

Personally, I think such valves can only appear in movies. In actual production processes, if turning on or off a valve requires 8,000 rotations, it still has to be done manually. Something happened early! Is it still meaningful to use such valves?

It’s an electric valve; it just can’t be powered due to the accident, so it was manually closed.

The plot requires the valve to be closed, but the protagonist is turning the handwheel counterclockwise, which means opening the valve: L

According to the plot design, it’s obvious that the operator is opening the valve.

If you watch the documentary on that accident in Dalian, you’ll see that the valve was originally controlled electromagnetically; it took two to three minutes to operate it electrically, while manual operation took dozens of minutes. Additionally, the actual number of turns of the valve’s ring was 80,000, rather than 8,000 as shown in the movie.