Is it necessary to install a breather valve at the center of a double-disc floating roof?
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I would like to ask the experts here: For double-disc floating roof storage tanks, a vent valve needs to be installed at the edge of the floating roof to release gas when the pressure in the gas space at that edge is high. If there may also be a gas space between the bottom plate of the floating disc and the liquid surface, is it necessary to install a breather valve at the center of the floating disc? In areas with high environmental protection requirements, is it necessary to recover the gases emitted from the breather valve?
Any exhaust gas must meet the standards!
The bottom plate of the floating disc is flat, and there is no need to install a breather valve at the center.
Isn’t the edge flat? Is the inside of the breather valve connected to the surface of the medium? Thank you