Manufacturer & Exporter of Ferrous & Non-Ferrous Components.

Bubble Caps Raisers and Fittings Manufacturer

Can't Find What You're Looking For?

We work with a variety of metal materials, product precision stamping products, tooling products, sheet metal fabrication products, and assemblies.
bubble cap raiser

Kuber Auto Pressing is a reputable manufacturer of bubble cap raisers, specializing in producing high-quality components for distillation columns in various industries. Bubble cap raisers are crucial elements used in the separation and purification of liquids, playing a vital role in processes such as chemical production, oil refining, and pharmaceutical manufacturing.

Kuber Auto Pressing employs advanced manufacturing techniques and state-of-the-art technology to produce bubble cap raisers that meet industry standards and customer requirements. The company emphasizes precision engineering and meticulous attention to detail to ensure that each raiser is reliable and performs optimally in demanding distillation processes.

Bubble cap raisers are fabricated from premium materials, including stainless steel or other corrosion-resistant alloys. These materials are carefully selected for their durability and ability to withstand the harsh chemical environments encountered in distillation processes, ensuring long-term performance and reliability.

Kuber Auto Pressing offers a diverse range of bubble cap raisers with different designs and specifications to suit various distillation column configurations and applications. The company’s team of skilled engineers and technicians work closely with customers to understand their specific needs and provide customized solutions that optimize column efficiency and productivity.

The bubble cap raisers produced are designed to facilitate efficient vapor-liquid contact and enhance the separation efficiency in distillation processes. These raisers feature precise drilling and engineering to ensure optimal vapor and liquid distribution, promoting effective mass transfer and component separation.

What is Bubble Cap Raiser?

A bubble cap raiser is a vertical pipe used in fluidized catalytic cracking (FCC) units, typically found in chemical engineering and petroleum refining processes. It connects the reactor vessel with the regenerator vessel and facilitates the movement of catalyst particles and hydrocarbon feedstock between them. The raiser is equipped with mushroom-shaped bubble caps evenly distributed along its length. These caps help distribute the feedstock uniformly across the catalyst bed and create a bubbling action by allowing gas or steam to flow through them. The bubbling promotes efficient mixing and contact between the catalyst and feedstock, enabling the conversion of heavy hydrocarbons into lighter, more valuable products.

Types of Bubble Cap Raisers

Fixed Bubble Cap Raiser

This type of raiser has bubble caps that are permanently fixed or welded to the raiser pipe. The caps are evenly distributed along the length of the raiser and provide consistent bubbling and distribution of the feedstock and gas.

Removable Bubble Cap Raiser

In this design, the bubble caps are not permanently fixed to the raiser. They can be removed for maintenance or replacement purposes. This type allows for easier access to the raiser internals, but it may require additional steps to ensure proper sealing when the caps are reinstalled.

Slotted Raiser

Instead of bubble caps, slotted raisers have slots or openings along their length. These slots allow the gas or steam to escape and create the desired bubbling effect. Slotted raisers are often used in situations where bubble caps may not be practical or efficient.

Multi-Stage Bubble Cap Raiser

In certain processes, multiple stages of cracking or reactions may be required. Multi-stage bubble cap raisers have several sections or levels, each with its own set of bubble caps. This design allows for more controlled reactions and better separation of different products.

Dual Feed Bubble Cap Raiser

This type of raiser is used when two different feedstocks or catalysts need to be introduced into the process. It has separate inlets for each feedstock, and the bubble caps are designed to ensure proper mixing and distribution of both streams.

Key features of Bubble Cap Raisers

Catalytic Cracking

Bubble cap raisers are specifically designed for fluidized catalytic cracking (FCC) processes. They provide a conduit for the catalyst particles and feedstock to move between the reactor and regenerator vessels, where the cracking reactions take place. The raiser’s design facilitates the necessary high temperatures and residence times required for the cracking process.


Bubble cap raisers can be designed to be fixed or removable. Removable bubble cap raisers allow for easier maintenance and replacement of bubble caps, ensuring the optimal performance of the raiser over time.

Multi-Stage Operation

In some applications, multiple stages of cracking may be required. Bubble cap raisers can be designed with multiple sections or levels, each with its own set of bubble caps. This enables the process to be divided into distinct stages, improving control and separation of different products.

Dual Feed Capability

Certain processes may require the introduction of multiple feedstocks or catalysts. Bubble cap raisers can be designed with separate inlets for each feedstock, allowing for the simultaneous processing of different streams. The bubble caps ensure effective mixing and distribution of both feedstocks.

Stainless Steel Bubble Cap

Copper Alloy Bubble Cap

Alloy Steel bubble Cap

MS Bubble Cap

Things to Consider When Selecting a Bubble Cap Raisers Manufacturer

When choosing a Bubble Cap Raisers manufacturer, it is essential to consider the following factors:

1. Quality and Reliability

Select a manufacturer known for producing bubble caps of exceptional quality, ensuring durability and resistance to corrosion, which leads to reliable and long-lasting performance.

2. Customization Options

Ensure that the manufacturer offers customization options to tailor the bubble caps to your specific distillation requirements, ensuring optimal performance and efficiency.

3. Industry Experience and Expertise

Look for a manufacturer with extensive experience and expertise in bubble cap production. A track record of successful projects and positive customer testimonials is a good indicator of their reliability and competence.

4. Excellent Customer Support

Choose a manufacturer that provides excellent customer support, readily addressing any inquiries, concerns, or after-sales support you may require. A responsive and helpful team is crucial for a smooth collaboration.

5. Competitive Pricing and Timely Delivery

Compare prices and delivery times among different manufacturers to select one that offers competitive pricing without compromising on quality. Ensure they can deliver the bubble caps within the agreed-upon timeframe to meet your project deadlines.

APPLICATION INDUSTRY - Bubble Cap Raiser and Fittings Manufacturer

Electrical Appliance Hardware
Electronic Hardware
Frame Structures
Metal Eyelet

Learn more about our Product Bubble cap Manufacturer

Get In Touch

Complete control over products allows us to ensure our customers receive the best quality prices and service. We take great pride in everything that we do in our factory.


    The bubble cap raiser is used in fluidized catalytic cracking (FCC) processes to transport catalyst particles and hydrocarbon feedstock between the reactor and regenerator vessels. It facilitates the cracking reactions by distributing the feedstock evenly and creating a bubbling action for efficient mixing with the catalyst.

    The bubble cap raiser operates by allowing gas or steam to flow through the bubble caps installed along its length. This generates a bubbling action that enhances the contact and mixing between the catalyst and the hydrocarbon feedstock. The rising mixture of catalyst and feedstock undergoes cracking reactions as it passes through the riser.

    Bubble cap raisers offer several advantages. They ensure uniform distribution of the feedstock, promote efficient mixing, and enhance the contact between the catalyst and feedstock, leading to improved cracking reactions. The design of the riser allows for flexibility, maintenance, and replacement of bubble caps as needed.

    Yes, there are different types of bubble cap raisers. They can be fixed or removable, have slotted openings instead of bubble caps, or be designed with multiple stages for specific process requirements. Some bubble cap raisers are also designed to handle dual feedstocks or catalysts simultaneously. Know more

    Scroll to Top
    Call Now Button