If a breather valve is installed, then there shouldn’t be a spill port, right? ? .
Thread Content
1. For Class A and B liquid storage tanks, if an overflow outlet is installed, it is usually connected to the atmosphere; wouldn’t this lead to significant evaporation of the liquid, which is equivalent to venting it, and thus not meeting the requirements for atmospheric emissions? 2. Also, if a breathing valve is installed, then a overflow port shouldn’t be able to be installed, right? ? .
The functions of the overflow port and the breather valve are different......
Can an overflow port be installed alongside a breathing valve? ?
Where does this overflow port lead? In an open space, a breathing valve is not necessary, but could negative pressure cause the medium at the overflow point to be drawn back in? In a confined space, at the flow direction, is there also pressure? Assume that a check valve is installed on the pipeline of the overflow port, allowing flow only in one direction and not in the other; well, you can imagine what happens then. . .
Sir, since the overflow outlet leads to the gutter and is connected to the atmosphere, then can’t such overflow outlets be used for Class A and B liquids? ? ? If it is to be set up, does the overflow liquid also need to be collected in a sealed manner? ? ?
And since an overflow port is installed, it can’t be used simultaneously with a breathing valve, right? ? There is a mismatch between the pressure on the overflow side and the pressure of the breather valve
I don’t know; it was discussed before.
Determined based on the medium properties and the conditions at the overflow port
The storage tanks are all equipped with breather valves, and there is also a vapor line leading to the absorption tower.
Does that breathing valve have 2 pipes? ? One path is for air intake from the atmosphere, and the other path is the gas pipeline you mentioned that leads to the absorption tower, right? ? ?
Are these two valves built-in to the breather valve? ? ?