Why Choose Our Clamp Union?
- Installation is quick and significantly reduces construction time, as no welding or complex tools are required.
- Combined with high-quality sealing rings, it ensures reliable sealing and is unlikely to leak due to vibration or temperature changes.
- Low maintenance cost, easy to disassemble quickly, and supports multiple repeated uses.
- It can be used in various industries such as food, pharmaceuticals, and chemicals, meeting different working conditions.
- Supports customized production, with dimensions, materials, and surface treatments customizable according to requirements.
OMSS — Your Reliable Clamp Union Supplier
OMSS has over 15 years of experience in manufacturing stainless steel fittings. We can ensure the consistency of the different batch sizes of clamp unions we supply to you, making it convenient for your installation and use. At the same time, we strictly inspect their surface treatment and sealing performance, which meets international standards such as ISO and 3A certifications.
If you are interested in purchasing clamp unions, OMSS is your ideal choice. Send us your requirements immediately and get the relevant quotations from us!
Our Products

This type of clamp union is mainly used in pipe systems with high pressure requirements. Its structural design is more robust and it can maintain stable sealing performance even under high-pressure conditions, which is commonly found in chemical equipment.

The tri clamp union is very convenient for installation and disassembly. Its structure is simple and it is particularly suitable for systems with high hygiene requirements, such as those in the food, beverage, and pharmaceutical industries.

Threaded clamp union usually has threads and can be directly connected to threaded pipes, valves or equipment. It retains the advantages of quick installation of clamps and is often used in projects where it is necessary to flexibly connect with the existing pipeline system.

If the standard specifications do not fully meet your working conditions, we can design and produce according to your drawings or usage conditions. This clamp union will be more flexible in terms of material, size, structure and surface treatment.
Features of Clamp Union

Our clamp unions do not require welding or complex procedures. All you need to do is install the sealing ring and lock the clamp, and you will complete the connection.

The clamp union achieves sealing by evenly distributing the force through the sealing ring. Under normal operating conditions, it is unlikely to encounter leakage problems.

When you need to repair or replace the pipelines, you can quickly remove the unions without damaging the original pipeline structure.

As long as the clamps and seals are in good condition, you can use them multiple times, thereby reducing your long-term usage costs.

Our clamp unions have relatively loose requirements for the installation accuracy of the pipelines, and can tolerate certain deviations.

You can install the clamp union without using fire, which reduces safety risks during the construction process. It is suitable for various complex on-site environments.

It can be used in various industries such as food, pharmaceuticals, chemicals, water treatment, etc., with strong versatility.

We support you in customizing different sizes, materials and structural forms according to your needs, which makes it convenient to match different projects.
High Batch Consistency
Our clamp unions are relatively stable from raw materials to processing procedures, ensuring that there are minimal differences in size, tolerance, and assembly effect between different batches of your products. It can significantly reduce your on-site installation problems or the need for repeated adjustments.


Reliable Sealing Suitable for Various Working Conditions
Each of our clamp unions is equipped with an appropriate sealing structure and sealing ring. The force is evenly distributed after locking, and it can maintain a good seal under both normal and high pressure conditions. Moreover, it is not prone to leakage over the long term and is more convenient to operate.
Support for Non-Standard Customization
OMSS has mature products in common sizes and types. At the same time, we also support customization based on drawings or actual working conditions. Whether it’s special sizes, structural adjustments, or material requirements, we can cooperate flexibly with your usage.

Applications of Clamp Union

On the food and beverage production lines, our clamp unions are widely used. This is mainly because they are easy to assemble and disassemble, and can be quickly removed for cleaning after production, which is more in line with the hygiene requirements for pipelines.

The pharmaceutical industry has very strict requirements for the sealing and cleanliness of pipelines. Our clamp unions are simple in structure and do not accumulate dirt easily, which makes them suitable for equipment systems that require frequent disinfection.

In the chemical system, our clamp unions are commonly used to connect various conveying pipelines. They not only ensure sealing but also facilitate your subsequent maintenance. Compared with the welding method, in case of problems, the handling process is faster and it can also reduce your downtime.

The pipelines in water treatment projects are usually quite complex and the construction period is also quite tight. However, our clamp unions are flexible in installation and easy to adjust, which can accommodate some installation deviations on site. They are also quite friendly to the project progress and later maintenance.
- Certificate of Compliance
Customer Reviews
The common materials include stainless steel, carbon steel, etc. Different materials are suitable for different media and working conditions. For instance, the food and pharmaceutical industries usually choose stainless steel materials.
If there is no obvious wear or deformation, our clamp unions can be reused. You only need to check the condition of the clamp and the sealing ring.
Generally, they can be used interchangeably under the same standards and specifications. However, we recommend that you confirm the size and sealing structure to avoid assembly mismatches.
Under reasonable working conditions and with proper maintenance, the service life of our clamp unions is quite long. Generally, you only need to perform regular inspections and replace the sealing rings.
Yes. Because our clamp unions are easy to assemble and disassemble, and they do not damage the structure of the pipeline itself. Moreover, they can be reused after use, which offers high flexibility.
What is a Clamp Union?
The clamp union is actually a device that uses clamps to quickly connect two sections of pipes or pipe fittings together. They require no welding and no complex tools.
During installation, you just need to place the sealing ring properly and then use the clamp to secure it, and you can achieve a stable and leak-free connection. Its key features are convenient disassembly and assembly, reliable sealing, and high reuse rate.
These fittings are particularly common in applications requiring frequent cleaning, maintenance, or pipeline replacement, such as in food processing, pharmaceutical manufacturing, chemical plants, and various industrial piping systems.
What are the Primary Functions of Clamp Unions?
Quickly Connect Pipe
The primary function of our clamp unions is to quickly connect two sections of pipes or equipment interfaces without the need for welding or drilling and tapping.
When installing, you just need to simply align the positions, place the sealing ring properly, and lock it with the clamp, which significantly saves your installation time.
Ensure Leak-Free Pipeline Sealing
Clamp unions typically feature a sealing gasket at their center. When tightened, they generate uniform clamping force to effectively prevent leakage of liquids or gases within the pipeline.
Under normal operating conditions, their sealing performance remains stable, which makes them particularly suitable for pipeline systems with stringent hygiene or safety requirements.
What are the Advantages of Using Clamp Unions Compared to Traditional Connection Methods?
Faster Installation
Compared with welding and flange connections, our clamp unions are much easier to install. You just need to align the pipe ends, install the sealing ring, and lock the clamp to complete the connection. The overall construction process is much faster.
Easier to Assemble and Disassemble
With traditional welding, once the installation is completed, if you want to disassemble it, you can only cut the pipe.
However, our clamp unions are completely different. When you need to perform maintenance or change the pipe, you just need to loosen the clamp to remove it. This will not damage the original pipe and it can be reused without any problem. In the long run, it can help you save maintenance costs.
More Stable Sealing
Our clamp unions achieve sealing by evenly distributing the force through the sealing ring. Compared to threaded connections, it will not loosen due to vibrations or thermal expansion and contraction. In liquid or gas transportation systems, it offers higher overall sealing reliability.
Accept Minor Errors
The traditional connection method has high requirements for the concentricity and angle of the pipeline. Even a slight deviation on site can make installation impossible.
Our clamp unions can accommodate a certain range of deviations, thus reducing your installation adjustment time.
Higher Safety
Due to the fact that it does not require welding, our clamp unions can avoid some safety risks and are particularly suitable for environments that are flammable, explosive or have strict hygiene requirements. Therefore, it is widely used in industries such as food, pharmaceuticals, and chemicals.
















