Elliptical Dish Head And Dished Head For Boilers Seal

Description

The elliptical head  which is a head consisting of two parts: a rotating ellipsoidal sphere and a cylindrical straight section.

Elliptical tank head is fabricated to have a certain shape instead of a particular dish radius or knuckle radius. The dish radius is

approximately 90% of the diameter and the knuckle radius is approximately 17% of the diameter. 2:1 elliptical flanged and dished heads are ASME compliant.

Selection of the dish heads​:

1. Customer requirements
2. Requirements of Chemical Process
3. Conical heads are used for vertical vessels of solid masses to facilitate the flow and discharge of masses. Elliptical head or spherical head for liquid masses.
4. Stirred pressure vessels should determine the shape of the head according to the shape of the slurry leaf and the flow form of the working mass.
5. According to the pressure. For medium and low pressure pressure vessels, ellipsoidal heads are mostly used. For high pressure and ultra-high pressure pressure vessels, spherical heads are mostly used.
6. Determine from the analysis of considering the stress situation. If the stress transition zone of ellipsoidal head is opened with larger openings and the local stress is too large, spherical head can also be considered.

Specifications:

Products

FAQ:

1. What’s the information should I provide when inquiry?

Thanks for your question. If you have drawings, we will be entirely in accordance with production drawings . If you do not have the drawing, you can tell me the product data. There are several important data, such as material, type of head( We have elliptical head, hemispherical head, dished head, flat head, etc. ),diameter, thickness, special tolerances or requirements. We can do the drawings according to your requirements, and you confirm that the final product drawings.

2. what are surface treatment of the product?

Thanks for your question. For carbon steel products, we sandblasting descaling product surface. For stainless steel products, we use acid to remove surface oil and impurities.

3. How do you ensure the quality of products?

Thanks for your question.Our production staff is trained through national quality department, and obtain the corresponding certificate, with years of production and design experience. Weld must undergo X-ray inspection to ensure that no defects.

4. Can you help us matching related products?

Thanks for your question. Our company also is surrounded by a lot of ancillary businesses, such as flanges, boiler, oil refining equipment, etc. We can help you matching the highest quality products with the lowest prices.