Identify the geometry
Head names point to different profiles. A section drawing is the clearest starting point for comparing the shape.
- Ellipsoidal: an elliptical crown profile; identify the intended ratio.
- Hemispherical: a profile based on half of a sphere.
- Torispherical: a crown with a knuckle transition.
- Conical: a tapered component with defined end diameters and height or angle.
- Flat or flanged-flat: a flat centre with the required edge configuration.
Compare the specification fields
Different shapes need different dimensions. Use the same units and make every measurement basis explicit before comparing alternatives.
- Diameter: ID or OD.
- Thickness: nominal or formed minimum.
- Profile: depth, radii, height and straight flange as applicable.
- Material, tolerances and drawing revision.
Keep shape and design responsibility separate
The name of a head does not establish a vessel pressure rating, material suitability or certification. The responsible project engineer must connect the component to the applicable design conditions and requirements.
Choose your next step
Use the product collection for the shape you need, or prepare a drawing-based enquiry when the profile still needs discussion.