Dairy SMS Union
What is an Dairy SMS Union?
An SMS Union (Swedish Manufacturing Standard Union) is a type of hygienic pipe connector widely used in the dairy, food, beverage, and pharmaceutical industries. It consists of three main components – a male part, a liner (female part), and a nut – along with a gasket to ensure a leak-proof connection. SMS Unions offer easy assembly, disassembly, and superior hygiene, making them ideal for clean-in-place (CIP) and sterilization-in-place (SIP) systems.
Asiad Steel Industries is a trusted manufacturer, supplier, and exporter of SMS Unions in SS 304 and SS 316L with fine finish, precision threads, and compliance with SMS 1145 standards.
Key Features
- Hygienic Design – Smooth internal surfaces prevent bacterial growth
- Leak-Proof Assembly – Reliable sealing with standard SMS gaskets
- Quick Installation – Tool-free assembly and dismantling for maintenance
- Corrosion Resistant – Made from SS 304/316L for long service life
- Standards Compliance – SMS 1145, DIN, and ISO standard compatible
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Value |
|---|---|
| Size Range | 1" to 4" (DN25 – DN100) |
| Grade | SS 304 / SS 316 / SS 316L |
| Connection Type | Male Part, Liner, Nut & Gasket |
| Thread Type | ISO Metric |
| Finish | Mirror / Electro Polished |
| Standards | SMS 1145, DIN 11851, ISO |
| Property | Value |
|---|---|
| Tensile Strength | 500 – 650 MPa |
| Yield Strength | 210 – 310 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 200 HB |
| Element | Composition (%) |
|---|---|
| Chromium | 18.0 – 20.0 |
| Nickel | 8.0 – 10.5 |
| Carbon | ≤ 0.03 – 0.08 |
| Manganese | ≤ 2.00 |
| Silicon | ≤ 1.00 |
| Iron | Balance |
| Standard | Equivalent Grade |
|---|---|
| ASTM | A182 F304 / F316 |
| EN | 1.4301 / 1.4404 |
| ISO | X5CrNi18-10 / X2CrNiMo17-12-2 |
| Size (Inch) | Type | Weight per Set (kg) |
|---|---|---|
| 1" | Standard SMS | 0.45 |
| 2" | Standard SMS | 0.85 |
| 3" | Standard SMS | 1.35 |
| 4" | Standard SMS | 2.10 |
Do you have questions?
What is the key difference between SMS and DIN unions?
SMS Unions use metric threads and are preferred for hygienic applications, whereas DIN unions often have heavier construction with trapezoidal threads.
Are SMS Unions compatible with CIP systems?
Yes. SMS unions are designed specifically for hygienic pipelines and are fully CIP and SIP compatible.
What materials are gaskets available in?
Gaskets are available in EPDM, PTFE, Silicone, and Nitrile based on media compatibility.
Can SMS unions be customized for high-pressure use?
Yes. Heavy-duty SMS unions with reinforced nuts can be provided on request.
