Why Choose Our Sanitary SMS Union
- The thread accuracy, sealing groove structure, and inner hole size are all strictly controlled.
- The inner surface finish can reach Ra ≤ 0.8 μm. Mirror polishing treatment is also available.
- Optional 304, 316, 316L (1.4401 / 1.4301) stainless steel. Support providing a material certificate and MTR report.
- Support EPDM, silicone, and metal detectable EPDM. We can provide sealing components that comply with FDA and 3A standards.
- By adopting CNC precision processing and strict quality inspection procedures, we can ensure stable delivery of batch projects.
OMSS —— Your Reliable Supplier of Sanitary SMS Union
OMSS specializes in the precise manufacturing of sanitary SMS unions. We use high-quality stainless steel materials and advanced processing techniques, so our products feature excellent sealing performance and long-term durability. We have standard specifications available for immediate supply and support customization. In addition, we provide stable supply, quick quotations, and complete technical documentation to equipment manufacturers, engineering contractors, and distributors, helping you reduce procurement risks and improve project efficiency.
Our Product
It is suitable for conventional sanitary piping systems and is easy to install with reliable sealing.
The extended structure design is suitable for pipeline systems that require longer connection distances.
Compact structure, with small space occupation, suitable for environments with dense pipelines or limited installation space.
A system suitable for thermal expansion compensation or for fine-tuning of pipelines,improving the stability of the pipeline.
Features of Sanitary SMS Unions
Produced strictly in accordance with the Swedish SMS 1145 standard, guaranteeing dimensional accuracy and stable sanitary sealing performance.
We offer various stainless steel materials that meet different corrosion resistance and industry application requirements.
Our sanitary SMS unions are well-suited for medium-pressure pipeline systems, which can keep stable performance under complex conditions.
We offer polishing technology for inner surfaces to reduce pollutant residue, which can improve the cleaning efficiency of the sanitary system.
We support L-shaped, square, and semi-O-shaped sealing structures, which meet various sealing and hygiene requirements.
Our sanitary SMS unions are easy to install and distribute force evenly, directly improving the efficiency of pipeline assembly.
Our sanitary SMS unions highly adapt to different countries’ equipment systems, facilitating global project integration.
We use a high-quality stainless steel structure, so it is perfect for harsh industrial environments.
Optimized Hygienic Sealing Structure
The SMS union uses a planar sealing structure. When tightening the nut, the sealing ring is pressed into the recess of the female adapter, and then it can form an even and stable sealing surface. The L-shaped cross-section sealing ring can reduce the annular retention area, lowering the liquid residue and bacterial growth. The inner hole structure is smooth and continuous, without obvious dead corners, so it facilitates the operation of the CIP online cleaning system. It is extensively used in productions with high hygiene needs, such as dairy products, beverages, and pharmaceuticals.
High-Grade Stainless Steel for Long-Term Durability
Metal components can be manufactured of 304, 316, and 316L stainless steel (1.4301 / 1.4401). The welding sleeves and welding heads are usually manufactured with 316 or 316L to strengthen corrosion resistance and adapt to cleaning agents and high-humidity environments. Under correct installation conditions, the SMS union can withstand a maximum medium pressure of 30 bar. It has excellent mechanical strength and wear resistance, so it is well-suited for complex conditions like food processing, pharmaceutical production, and chemical pipeline systems.
Complete Set Supply with Engineering Support
Each set of SMS union includes a circular slotted nut, welding sleeve, welding male connector, and sealing ring. We provide immediate delivery for standard sizes. We also support custom production based on drawings. Additionally, we can provide material certificates and MTR reports. We also supply blind sleeves, blind nuts, and installation tools, which can help equipment manufacturers and engineering contractors simplify the procurement process.
Applications of Sanitary SMS Union
The dairy production line has high needs for health grade, especially in milk transportation, pasteurization, CIP cleaning systems, and other processes. The SMS union can provide a smooth and seamless connection structure. Their good sealing performance can prevent leakage problems and cut the occurrence rate of shutdown cleaning. For export-oriented dairy equipment manufacturers, connection components that comply with the SMS 1145 standard are more conducive to compatibility with European systems.
In carbonated beverages, fruit juices, and beer fermentation systems, the pipelines need to be frequently cleaned and are also subjected to certain pressure. The SMS union has a simple structure and is easy to assemble and disassemble, so it is perfect for production maintenance and equipment upgrades. The 316L stainless steel material can resist corrosion from cleaning solutions and humid environments, which can prolong the lifespan of the equipment and cut the cost of later maintenance.
The pharmaceutical industry has strict needs for the cleanliness of pipeline systems and the traceability of materials. The SMS union supports providing material certificates and test reports, meeting the needs of project audits. The smooth inner cavity and high-quality sealing structure can lower pollutants, so they are well-suited for fluid transportation systems with high needs for a sterile environment.
In the processes of meat processing, sauce production, and liquid food transportation, the pipeline system requires a stable connection and an easy-cleaning structure. The flat sealing design of the SMS union is conducive to improving cleaning efficiency and reducing bacterial residue. Its structural strength can withstand continuous operation conditions and is suitable for large-scale food production lines.
In fertilizer pipelines, pneumatic systems, and some medium-pressure industrial pipelines, the SMS union also has excellent applicability. The corrosion-resistant stainless steel structure can cope with complex environments. For industrial applications, it needs stable sealing and reliable strength; this product can provide long-term stable connection performance.
- Certificate of Compliance
Customer Reviews
We ordered stainless steel tank accessories and pipe fittings from OMSS for industrial fluid handling applications. The products arrived on time with proper protection, and the installation process was smooth. Their team was responsive whenever we needed technical information before and after delivery.
ThomasOMSS has become one of our trusted stainless steel component suppliers. We appreciate their fast communication, clear order updates, and careful packaging. Even for customized parts with different specifications, they maintain good consistency between samples and mass production.
SarahWe have strict requirements for surface finish and hygiene standards in pharmaceutical equipment. OMSS stainless steel fittings showed excellent workmanship, with smooth surfaces and precise machining. Their products helped us meet our equipment assembly requirements and maintain reliable production performance.
Michael
When installing, you should guarantee pipeline alignment, then evenly tighten the slotted nut to compress the sealing ring. Regularly check the sealing ring and the condition of the inner hole wear to avoid seal failure.
Yes.SMS unions has smooth inner hole,its sealing design meeting the sanitary requirement ,which can directly applied in CIP online cleaning system,and avoid deadly gaps remaining.
Under correct installation and maintenance conditions, the lifespan of 316L stianless steal SMS union can reach 20 years, specifically depending on pressure, chemical corrosion, and cleaning frequency.
Yes.SMS unions can be customized according to pipe diameter, material, and type of sealing ring. It is always applied in special pipeline or equipment compatibility requirements.
Without any special tools, it only need matching C-shaped wrench to tighten the slotted nuts. The correct torque guarantees a reliable seal and prevents damage to the sealing ring.
What is the Sanitary SMS Union?
The sanitary SMS union is a high-standard pipe fitting, which is always applied in food, beverage, dairy, pharmaceutical, and sanitary chemical pipeline systems. It complies with the Swedish SMS 1145 standard, guaranteeing reliable and leak-proof stainless steel pipe connections, as well as ease of maintenance.
The sanitary SMS union consists of four main components: a circular slotted nut, a welding sleeve, a welding male connector, and a sealing ring. During installation, the sealing ring is evenly pressed into the gap between the male connector and the sleeve to form a tight, hygienic seal.
How to Choose the Right Sanitary SMS Union
Selecting the right sanitary SMS union should be considered based on materials, specifications, sealing type, pressure rating, and application environment, etc.
Determine the Pipe Size and Connection Standards
First of all, you should confirm the diameter and standard of the pipeline. The SMS union complies with the SMS 1145 Swedish standard and is also compatible with some DIN standards. The common size range is DN25–DN104.
Choose the Appropriate Stainless Steel Material
The metal components can choose 304, 316, or 316L stainless steel.
- 304 Stainless Steel: Suitable for ordinary food and beverage pipelines, with average corrosion resistance.
- 316 / 316L Stainless Steel: It has higher corrosion resistance and is perfect for high-humidity and acidic environments in the dairy, beer, beverage, and pharmaceutical industries.
The choice of material directly influences the lifespan and hygiene performance of the pipeline. Therefore, for high-demand systems, you should select 316 or 316L.
Confirm the type of the sealing ring
The SMS union supports various sealing rings:
- EPDM: Suitable for general food, dairy products and beverage pipelines
- Silicone: Resistant to high temperatures and acids and alkalis
- Metal detectable EPDM: Well-suited for automatic detection systems to prevent foreign matter contamination
In addition, the cross-sectional shapes of the sealing rings include L-shaped, square and semi-O-shaped. Choosing the appropriate cross-section can reduce the retention area and guarantee a good CIP cleaning effect.
Consider the pressure level and the application environment
The SMS union usually can withstand a maximum pressure of 30 bar and is suitable for medium-pressure piping systems. When choosing, you should consider the operating pressure of the pipeline, temperature, and the presence of corrosive media. For pharmaceutical or dairy systems, higher corrosion and chemical resistance requirements are needed. In such cases, a 316L material should be selected along with a suitable sealing ring.
Evaluate disassembly and maintenance needs
If your pipeline needs frequent disassembly and cleaning or equipment maintenance, you should select standard type SMS unions, and guarantee there is sufficient installation space. The nut structure and seal ring design should facilitate disassembly and assembly.
