The Hygienic SMS Union Pipe Fitting is manufactured from SUS304 / 1.4301 or SUS316L / 1.4404 stainless steel and designed according to SMS 1145 hygienic union requirements. Precision-machined connection and sealing surfaces help maintain a reliable joint while the smooth internal surface reduces product retention within the process line.
AVM SMS Union Pipefitting is suitable for dairy, food and beverage, brewing, pharmaceutical, biotechnology, cosmetic, and other hygienic liquid processing systems, particularly where cleanability and convenient pipeline maintenance are important.
The union is designed according to SMS 1145 requirements for sanitary piping connections. The standardized structure helps facilitate compatibility with corresponding SMS sanitary components and allows engineers to build serviceable process piping systems.
The union format is particularly useful for pipelines that need to be opened periodically for equipment replacement, inspection, cleaning, or process-line modification.
AVM provides SUS304 / 1.4301 and SUS316L / 1.4404 material options.
SUS304 is suitable for general sanitary processing applications where standard corrosion resistance is sufficient. SUS316L offers higher corrosion resistance and is commonly selected for pharmaceutical, biotechnology, dairy, and more demanding process environments.
Material selection should consider the process medium, cleaning chemicals, operating temperature, and applicable industry requirements.
Different installation conditions require different connection arrangements. AVM SMS Union Pipefitting can be supplied in threaded union, welded union, and male/female union configurations.
This allows buyers to select the connection structure according to the existing pipework, equipment interface, installation method, and maintenance requirements.
The sealing interface is one of the most important considerations when selecting a sanitary union. AVM SMS unions use precision-machined sealing surfaces and compatible sanitary sealing materials to help reduce leakage during normal operation.
Available seal materials include EPDM, FKM, PTFE, and Silicone, allowing the sealing configuration to be selected according to the process medium and operating conditions.
The standard surface finish is Ra ≤ 0.8 μm. The smooth internal surface helps reduce areas where process fluids can remain and supports cleaning procedures in hygienic piping systems.
| Item | Specification |
| Product | Hygienic SMS Union Pipe Fitting |
| Standard | SMS 1145 |
| Size Range | DN10 – DN100 |
| Material | SUS304 / 1.4301, SUS316L / 1.4404 |
| Seal Material | EPDM / FKM / PTFE / Silicone |
| Standard Surface Finish | Ra ≤ 0.8 μm |
| Connection Types | Threaded Union / Welded Union / Male-Female Union |
| Cleaning | CIP/SIP Compatible |
| Application | Hygienic Process Piping Systems |
The union structure allows connected components to be separated without cutting the pipeline. This is useful when pumps, valves, instruments, tanks, or other process equipment require inspection or replacement.
For factories with regular production maintenance, a removable union connection can reduce the work involved in accessing individual sections of the piping system.
The connection should be assembled using the correct gasket and tightening method. Excessive tightening should be avoided because it may damage the sealing components or affect connection performance.
The Hygienic SMS Union Pipe Fitting can be incorporated into sanitary piping systems using CIP and SIP cleaning procedures, provided the selected material and seal are compatible with the actual cleaning chemicals, temperature, pressure, and sterilization conditions.
Sanitary connections need to provide more than mechanical joining. Their internal geometry, sealing structure, surface finish, and material selection all influence cleaning and contamination control.
The AVM Hygienic SMS Union Pipe Fitting uses a smooth internal flow path and stainless steel construction to reduce product retention and support hygienic processing.
For pharmaceutical, biotechnology, food, and dairy projects, buyers should evaluate the complete piping assembly, including tubes, fittings, gaskets, valves, welding quality, and cleaning procedures, rather than assessing the union independently.
SMS unions are suitable for dairy process lines used for milk, cream, yogurt, and other liquid dairy products. The removable connection structure is useful for equipment requiring regular inspection and cleaning.
The union can be used in beverage production, liquid food processing, ingredient transfer, and sanitary utility piping where cleanable connections are required.
In brewing equipment, unions can connect tanks, pumps, valves, and process pipelines while allowing selected components to be removed for maintenance.
SUS316L construction and compatible sealing materials make the union suitable for clean process piping used in pharmaceutical and biotechnology facilities. Final material and surface requirements should be selected according to the specific process specification.
The union can be applied to sanitary liquid processing lines for cosmetics and suitable chemical products where corrosion resistance, cleanability, and maintainable connections are required.
| Seal Material | Typical Selection Consideration |
| EPDM | Suitable for many water-based and general sanitary applications |
| FKM | Suitable where higher chemical and temperature resistance is required |
| PTFE | Suitable for demanding chemical compatibility requirements |
| Silicone | Commonly selected for applications requiring flexible sanitary sealing |
| Selection Basis | Process medium, temperature, pressure, cleaning chemicals, and sterilization conditions |
The actual seal material should be confirmed against the process medium and operating conditions before ordering.
The available range is DN10–DN100. The union size should correspond to the existing tube or equipment connection rather than being selected only according to the expected flow rate.
SUS304 is suitable for many general sanitary applications, while SUS316L is normally preferred for higher corrosion resistance and more demanding hygienic process conditions.
Threaded, welded, and male/female configurations serve different installation requirements. Buyers should check the existing pipeline interface before selecting the union.
EPDM, FKM, PTFE, and Silicone have different chemical and temperature resistance characteristics. The seal should be selected based on the actual process and cleaning conditions.
AVM supplies Hygienic SMS Union Pipe Fitting in different sizes, stainless steel grades, connection configurations, and sealing materials for hygienic process piping projects.
When requesting a quotation, buyers can provide the DN size, material grade, connection type, seal material, quantity, surface finish, and application.
For dairy, food, beverage, pharmaceutical, biotechnology, cosmetic, and other clean-process projects, AVM can confirm the appropriate configuration and available technical documentation according to the specific order requirements.
The product is designed according to SMS 1145 hygienic union requirements and is intended for compatible sanitary process piping systems.
The standard material options are SUS304 / 1.4301 and SUS316L / 1.4404. The appropriate grade should be selected according to the process medium and corrosion requirements.
The standard size range is DN10 to DN100. The required size should be matched with the existing sanitary tube and equipment connection.
Available options include EPDM, FKM, PTFE, and Silicone. The correct material depends on the process medium, temperature, pressure, cleaning chemicals, and sterilization conditions.
Yes. The union can be incorporated into CIP/SIP-compatible sanitary systems, provided that the selected sealing material and complete connection assembly are suitable for the actual cleaning and sterilization conditions.
A welded connection creates a permanent pipe joint, while a union provides a removable connection. SMS unions are particularly useful where equipment or pipeline sections need to be regularly inspected, replaced, or disassembled.
Not every pharmaceutical application requires the same material configuration. However, SUS316L is commonly selected for demanding hygienic and corrosion-sensitive process environments. The final material grade should be determined according to the process specification.
The standard surface finish is Ra ≤ 0.8 μm. If a project requires a different surface specification, this should be confirmed with AVM before production.
The standard production lead time is 7–10 days. The actual schedule depends on order quantity, material availability, product specifications, and customization requirements. Urgent orders should be confirmed with AVM before ordering.
The standard terms are 30% deposit and 70% balance before shipment by T/T or L/C. Small-value orders should be paid in full before production.
The products are securely packed in paper and wooden cases for international transportation. Packaging arrangements can be confirmed according to order quantity and shipping requirements.
Address
No. 373 Oufan Road, Dongtou District, Wenzhou City, Zhejiang Province, China
Tel
