Do You Know the Advantages and Disadvantages of Different Heads?

In industrial production, the safety and reliability of pressure vessels are crucial. The head, as an important component of pressure vessels, plays a critical role. The use of appropriate head can not only ensure the stable operation of equipment, but also effectively improve production efficiency and economic benefits. Let Sida Head guide you through the advantages and disadvantages of different heads, helping you better choose the suitable product.

1. Hemispherical head

Pros：Excellent mechanical performance, Film stress being half of that of a cylinder with the same diameter, High material utilization, Minimal surface area, Steel savings.

Cons：High manufacturing complexity, Difficulty of one-piece stamping for small-diameter heads, Need for segmented stamping and welding on large-diameter heads, Complex processes and high costs, Limited applicability (primarily to high-pressure vessels).

2. Elliptical head

Pros: Uniform stress distribution, Mechanical performance second only to hemispherical heads, Ease of manufacturing, Shallow depth, Ease of welding and standardization of production.

Cons: Suitable only for medium- and low-pressure vessels, Need for hemispherical heads in high-pressure enviroments.

3. Dished head

Pros: Processing flexibility, Ease of forming and manufacturing, Low mold cost, Wide applicability.

Cons: Severe stress concentration, Need for additional reinforcement, Poor mechanical performance, Unsuitable for high-pressure or frequent load variation conditions

4. Conical head

Pros: High material discharge efficiency, Adaptability to diameter variations, Can serve as connecting components for cylinders of different diameters.

Cons: Uneven stress distribution, Need for flange design or local thickening to mitigate, Limited applicability, Primarily used in medium- and low-pressure vessels.

5. Flat head

Pros: Simple structure, No complex forming process requied, Low cost, Suitable for small-diameter vessels.

Cons: Weak load-bearing capacity, Increased thickness required, Increased weight, Limited applicability, Recommended only for small-diameter, medium-pressure conditions.

The types of heads applicable in different scenarios vary. When purchasing, it is necessary to flexibly choose according to your own needs. Whether reliable protection in high-pressure environments or stable applications in medium and low pressure scenarios, Sida Head can provide you with precise solutions. If you have head procurement needs, please visit Sida Head’s official website “www.sidavesselhead.com” or call “+86 17610621022” for consultation.