Regarding the operation of tank trucks
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That expert knew how to operate and read the level gauges on the tanks of tank trucks. There were emergency shut-off ball valves on the rapid connection pipelines for the gas and liquid phases of those tank trucks; he understood how they worked and under what conditions they would activate. . .
What models are available for fast street use on tank trucks (in terms of pipe size)?
The level gauges on tank trucks are generally rotary in design; 0m is indicated at the bottom and the maximum level is indicated at the top. Before taking a reading, turn the gauge to the highest position first, then loosen the small screw at the front of the gauge to allow gas and liquid to emerge. Once only gas is coming out, slowly rotate the gauge downward until liquid starts to emerge; the corresponding height will indicate the liquid level in the tank truck. Be careful while operating! Additionally, the emergency shut-off valves on tank trucks are generally divided into two types: mechanical and hydraulic. In the hydraulic type, a manual oil pump is used to reach a pressure of 4 MPa in order to open the valve; in the mechanical type, a spring is pulled by hand to open the valve. Their purpose is to allow for remote control of the valve by opening it from behind the tank’s container in case of an emergency (such as a leak in the tank truck or the filling hoses/valves), thereby enabling immediate isolation of the tank truck! ! This is my first time typing like this; please don’t laugh at my clumsy attempts! !
Reply to 3# w497967153: Thank you. I just think it’s a bit of a drawback that the shut-off valve cannot operate automatically
I would like to ask: if the pipeline is under pressure, can the quick connector be disconnected from the tank truck directly? Thank you
Why isn’t an emergency shut-off valve added?