Sanitary Union Fittings - Premium Quality for Hygienic Applications*High-precision sanitary union fittings compliant with international standards for food, pharmaceutical, and chemical industries* Product Overview Our sanitary union fittings are engineered to meet strict hygienic requirements, available in multiple international standard forms to suit diverse industrial applications. With reliable sealing performance, excellent corrosion resistance, and easy installation, they are widely trusted in sectors requiring sterile and contamination-free fluid transfer. Core Specifications
| Item | Details |
| Standard Forms | SMS Sanitary Union Fitting, IDF Sanitary Union Fitting, DIN Sanitary Union Fitting, German Standard Union Fitting, Trapezoida |
| Sizes | DN15 – DN150; 1〞 – 6〞; Ф12.7 – Ф152.4 |
| Connection Types | Sanitary Union Fitting Series |
| Compliance Standards | ISO, DIN, IDF, SMS, 3A, etc. |
| Material | Stainless Steel SUS304, Stainless Steel SUS316L |
| Surface Quality | Precision polished interior and exterior (meets high surface finish requirements) |
| Sealing Ring | EPDM, NBR, PTFE |
| Working Temperature | -10℃ to +150℃ |
| Customization | Accepts non-standard customization (per customer's drawings or samples) |
Engineering Advantages & Features
Strict Quality Control: CNC precision-machined with internal and external polishing to prevent bacterial growth and ensure sanitary compliance.
Material Authenticity: Forged from food-grade and pharmaceutical-grade SUS304/SUS316L with provided material traceability for bulk orders.
Global Standard Compatibility: Fully interchangeable with major international hygienic standards (ISO, DIN, IDF, SMS, 3A).
Reliable Performance: Engineered to withstand harsh operating conditions, adapting to extreme temperatures (-10°C to +150°C) and working pressures up to 1.0MPa.
Primary Application Industries
Food & Beverage: Beverage production, food processing, and sterile fluid transfer.
Dairy & Brewing: Milk processing, yogurt production, and commercial beer brewing lines.
Pharmaceutical: Drug manufacturing and high-purity chemical processing.
What is the role of a union liner in a sanitary pipeline?
Sanitary Union Liner (Weld End)
In a hygienic union assembly, the liner is the female weld-end component. It is welded to one section of the pipe and features a flat or grooved face to hold the sealing gasket. It mates perfectly with the male threaded part (Raccord) and is secured tightly by the union nut, ensuring a flush, sterile, and leak-proof internal pipeline joint.
304 vs 316L for Sanitary Union Liners: Which is better?
| Material Grade | Corrosion Resistance | Best Application Scenarios |
|---|
| SUS304 Stainless Steel | High (Standard Food Grade) | Standard dairy, drinking water, and general beverage processing. Cost-effective for bulk pipeline systems. |
| SUS316L Stainless Steel | Superior (Contains Molybdenum) | Pharmaceuticals, high-acid brewing (cider/wine), and systems requiring harsh chemical CIP cleaning. |
