A dished head, also known as a torispherical head, is a dish with a fixed radius. The size of the radius depends on the type of dished head. Commonly used in moderate-pressure applications that require some height, dished heads are an efficient and cost-effective choice. The most common types of dished tank heads are the ASME F&D head, Klöpper head, Korbbogen head, and 80-10 head.
On a dished head, the transition between the cylinder and the dish is known as the knuckle and it has a toroidal shape, which means it resembles a torus. Almost like a ring-shaped donut, a torus is a shape formed by rotating a closed curve, especially a circle, around a line that lies in the same plane but doesn’t intersect it.
Specifications of Dished Tank Heads
- Diameter: Available from 9” to 126”
- Radius: Equal to 100 percent of diameter
- Knuckle Radius ID: Typically 2” maximum
- Thickness: Available from 14 gauge to ½” plate
- Material: Manufactured from stainless steel, aluminum, Hastelloy™, and other nickel alloys
- Grit: All materials are available polished ID/OD from 80 to 400 grit (less than 5 RA)
- Size: Hemispherical heads manufactured as ID, OD, and any fractional dimension between whole numbers
- Weld Preparations: Square edge, ID or OD bevel, ID/OD bevel, ID or OD bevel with land, ID/OD bevel with land, ID or OD tapers with bevel and land
Please note that we do not offer any design services to our customers. Once you’ve figured out the dimensions and design you need, notify our team and we’ll begin work on the project.
Standards for Our Standard Dished Head
Our flanged and dished head complies with the American Society of Mechanical Engineers (ASME) code, which means it follows all guidelines regarding pressure vessel materials, design, fabrication, examination, inspection, testing, and certification. At Tank Components Industries, we are committed to ASME compliance because we believe our customers deserve the highest quality products available. You can rest assured that all of our products have been rigorously tested for safety and durability.
Application of Dished Heads
Ensuring a high level of quality and safety, standard dished heads are required in a variety of processing industries. This is a cost-effective design that is perfect for ASME vessels. Flanged and dished heads work well in moderate- to high-pressure applications in which overall height is important.
About Tank Components Industries
Tank Components Industries is your one-stop-shop for all things related to tank manufacturing. Whether you’re looking for tank heads, cones, cylinders, ferrules, or even specialty fittings, we manufacture it all in-house with strict ASME standard compliance. We also supply spray balls, tip tube assemblies, manways, access ports, sight glasses, light assemblies, gaskets, and clamps. Plus, we utilize 5-axis waterjet cutting technology, which ensures efficiency and precision, for an optimal manufacturing experience.
Tank Components is the only manufacturer working exclusively with stainless steel and nickel alloy components that does not compete with customers by building tanks. Instead, we work closely with our customers, partnering with them and helping them develop their unique businesses. Since Tank Components was founded in 2000, we have stood by this honest, unprecedented approach. You make the tanks; we make the components.
If you’re interested in learning more about our products and services, please reach out for a free quote today. Tank Components is committed to providing high-quality products, competitive prices, and efficient delivery.