Nozzle flange of the spherical tank
Thread Content
What type of flange should be used for the nozzles of a spherical tank?
It depends on what kind of spherical tank it is and what its design pressure is.
Using a welded flange with a neck is definitely the right choice
It must be a long-neck flange; it should be the concave surface as shown in the diagram
Are there corresponding standards? I searched for a long time but couldn’t find it
What is the medium inside the spherical tank, what is its operating pressure, and what is its operating temperature?
Regardless of the type of sphere tank, butt-welded male and female flanges should be used, with wound gaskets as the sealing element.
Since it’s a spherical tank, the pressure is considerable; the WN series should be suitable. As for gaskets, I can’t say exactly which type to use. From a safety perspective, wound gaskets are an option; from an economic standpoint, it depends on the physical properties of the medium. But they aren’t very expensive
A regular flange connection will do!
Flange with neck for butt joint; the pressure can be specified as well 1
For necked butt-weld flanges, the pressure rating should be selected by first choosing the next higher grade and then another level higher. The sealing surfaces and gaskets are selected based on the medium.