Sanitary Weld Neck Flange
The Sanitary Weld Neck Flange is a high-integrity pipe connection component designed for hygienic process systems. It features a long tapered hub that transitions smoothly from the pipe wall thickness to the flange thickness, which reduces stress concentration at the base of the flange. The flange is joined to the piping system by butt welding, providing a full-penetration weld that ensures superior structural strength and leak-proof performance. Manufactured from stainless steel SS304 or SS316L, this flange type complies with ASME B16.5, DIN, and 3A sanitary standards, making it the preferred choice for high-pressure and high-temperature hygienic applications where reliability is critical.
Sanitary Weld Neck Flange
Key Features
- Long tapered hub design reduces stress concentration and provides excellent fatigue resistance
- Full-penetration butt weld ensures maximum joint integrity and leak-proof sealing
- Smooth internal surface eliminates dead zones and prevents bacterial growth
- Available in SS304 and SS316L for superior corrosion resistance
- Precision-machined sealing surface ensures tight gasket contact
- Suitable for high-pressure and high-temperature operating conditions
- Compliant with ASME B16.5, DIN 11853, and 3A sanitary standards
- ID/OD polished to Ra 0.8 um or better for hygienic compliance
- Easy to radiograph for weld quality inspection
Technical Specifications
- Maximum Pressure: 10 bar (150 PSI)
- Minimum Pressure: Vacuum
- Operating Temperature: -20 C to +200 C
- Surface Roughness: Ra 0.8 um (ID/OD)
- Body Material: SS304 / SS316L
- Sealing Material: EPDM / Silicone / PTFE gasket
- Operating Mechanism: Bolted connection with gasket
Applications
- Food and beverage processing pipelines
- Dairy and milk production systems
- Pharmaceutical and biopharmaceutical manufacturing
- Cosmetics production lines
- Semiconductor ultra-pure water systems
- Chemical processing plants
- Brewing and distillery installations
- High-pressure sanitary process lines
