Selection of equipment flanges
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This post was last edited by Taizhou newcomer on 2018-4-3 09:58. The medium used in the equipment is a highly hazardous one; the design pressure is 0.6 MPa, and the inner cylinder needs to be sprayed. For equipment that features an inner cylinder and a jacket, should the equipment flanges be of the butt-welded type RF or the face-welded type FMF? Are there any other flange types that can be used?
The more economical it is, the better, as long as the pressure rating meets the usage requirements.
Since the medium is highly hazardous, it is advisable to use butt-welded flanges for the equipment flanges.
Flanges, gaskets, and fasteners constitute the sealing system, and they have little to do with the type of sealing surface. High-hazard or highly hazardous medium? For high-hazard applications, it is recommended to use necked butt-weld flanges, along with wound gaskets and high-strength studs; either the PF face or FMF face can be used.
The equipment has an inner cylinder and a jacket; the inner cylinder is connected to the inner end cap via equipment flanges, and are these equipment flanges also reinforced?
It’s mainly the medium inside the sealed inner cylinder, right? A jacket is nothing more than water or steam (for heating or cooling)
Oh right, in that case does the flange of this equipment also need to be a strong butt-welded flange?
For highly hazardous media, wafer-type butt weld flanges should be used
The equipment flanges are necked butt-welded flanges, equipped with wound gaskets and high-strength studs
In fact, the commonly used standards do not require the use of necked flanges for equipment with highly hazardous media; however, it is more reasonable to use butt-welded flanges, and concave-convex sealing surfaces are preferable.