Dairy Nipple
What are Dairy Nipples?
A Dairy Nipple is a sanitary pipe fitting used to connect two sections of pipelines in food, dairy, beverage, pharmaceutical, and chemical processing systems. It consists of a short length of pipe with threads or welding ends, designed for quick and hygienic connection. Dairy Nipples ensure smooth, contamination-free flow and are easy to install, dismantle, and clean, making them essential for industries that demand high levels of hygiene and reliability.
Asaid Steel Industries is a trusted Dairy Nipple manufacturer and supplier, offering high-quality nipples in stainless steel with precision finishing for hygienic and durable connections.
Key Features
Leak-Proof
Jointing
Sanitary
Design
Easy to
Clean
Standards
Compliant
Corrosion
Resistant
Specifications
| Specification Category | Parameter / Feature | Details / Options |
|---|---|---|
| Size Range | Nominal Pipe Size (NPS) | ½” to 4” (DN15 – DN100) |
| Pressure Ratings | ANSI / ASME Class | Class 150, 300, 600 |
| PN Ratings | PN6, PN10, PN16 | Compatible with sanitary piping systems |
| Fitting Types | Butt Weld Fittings | Dairy Nipple with beveled ends for welding to pipe/fitting |
| Socket Weld Fittings | Nipple with socket weld ends for hygienic connections | |
| Threaded Fittings | Threaded nipple (male ends) for sanitary unions and connections | |
| Bar Stock Threaded Fittings | High-pressure threaded nipples manufactured from solid bar stock for durability | |
| Investment Casting Fittings | Precision-cast nipples for complex connections, smooth surface finish | |
| Material Options | Stainless Steel | SS 304, SS 304L, SS 316, SS 316L, SS 321 |
| Carbon Steel | ASTM A234 WPB | |
| Alloy / Superalloy | Alloy Steel (A234 WP1, WP5, WP9), Inconel 600/625 | |
| Duplex & Super Duplex | Duplex 2205, Super Duplex 2507 | |
| Other Materials | Monel 400/K500, Nickel 200/201, Titanium (Grade 2, Grade 5) | |
| Standards & Certifications | ASME / ANSI | ASME B16.9 (Butt Weld), ASME B16.11 (Socket Weld & Threaded) |
| ASTM | ASTM A234, ASTM A403, ASTM B366 | |
| European Standards | DIN 2605, DIN 2615, EN 10253 | |
| Certifications | ISO 9001, PED 2014/68/EU, NACE MR0175, IBR Approved | |
| Design Features | Wall Thickness | As per ASME B36.10 (CS), ASME B36.19 (SS), customized options |
| End Connections | Beveled Ends, Plain Ends, Threaded, Socket Weld Ends | |
| Tolerance | As per ASME/ANSI standards | |
| Coating & Surface Finish | Anti-Corrosion Coating | Rust Preventive Oil, Black Oxide, Hot-Dip Galvanized |
| Optional Coatings | Epoxy, PTFE, Polyurethane | |
| Surface Finish | Machined, Pickled, Polished, Passivated | |
| Testing & Inspection | Pressure Testing | Hydrostatic, Pneumatic |
| Non-Destructive Testing | Radiography (RT), Ultrasonic (UT), Magnetic Particle (MPI), Dye Penetrant (DPT) | |
| Destructive Testing | Tensile, Hardness, Impact |
Dimensions
| Nominal Size (OD) | Length (mm) | Thread Type (if threaded) | Thickness (mm) | Standard |
|---|---|---|---|---|
| ½” (12.7 mm) | 50 – 150 | BSP / NPT / SMS / DIN Male | 1.5 – 2.0 | DIN 11850 / SMS 1145 |
| ¾” (19.05 mm) | 50 – 150 | BSP / NPT / SMS / DIN Male | 1.5 – 2.0 | DIN / ISO |
| 1” (25.4 mm) | 50 – 150 | BSP / NPT / SMS / DIN Male | 1.5 – 2.0 | DIN / SMS |
| 1½” (38.1 mm) | 50 – 200 | BSP / NPT / SMS / DIN Male | 1.5 – 2.0 | DIN / ISO / IDF |
| 2” (50.8 mm) | 50 – 200 | BSP / NPT / SMS / DIN Male | 2.0 – 2.5 | DIN / ISO |
| 2½” (63.5 mm) | 75 – 200 | BSP / NPT / SMS / DIN Male | 2.0 – 2.5 | DIN / SMS |
| 3” (76.2 mm) | 75 – 200 | BSP / NPT / SMS / DIN Male | 2.0 – 3.0 | DIN / SMS / ISO |
| 4” (101.6 mm) | 100 – 250 | BSP / NPT / SMS / DIN Male | 2.0 – 3.0 | DIN / ISO |
Mechanical Properties
| Property | Value | Unit / Standard |
|---|---|---|
| Tensile Strength | 485 – 620 | MPa (Stainless Steel Grades) |
| Yield Strength | 170 – 310 | MPa |
| Hardness | ≤ 200 | HB (Brinell) |
| Elongation | ≥ 35 | % |
| Density | 7.9 – 8.0 | g/cm³ |
| Impact Toughness | ≥ 27 | J (Charpy, temperature-dependent) |
| Modulus of Elasticity (E) | ~200 | GPa |
| Fatigue Strength | 240 – 300 | MPa |
| Corrosion Resistance | Excellent (SS 304/316L suitable for dairy, food & beverage industries) | – |
| Thermal Conductivity | 14 – 16 | W/m·K |
| Coefficient of Thermal Expansion | 16 – 17 ×10⁻⁶ | /°C |
| Yield Ratio (YS/UTS) | 0.35 – 0.60 | – |
| Poisson’s Ratio | 0.27 – 0.30 | – |
| Brinell Hardness Range | 120 – 200 | HB |
| Surface Finish | Hygienic polished finish (180–320 grit) | As per DIN / SMS / ISO |
| Welding Type | Butt-welded / Socket Weld / Threaded ends | – |
| Operating Temperature Range | -20 to 200 | °C (SS 304/316L) |
| Pressure Rating | 10 – 40 | bar (depending on design & standard) |
Weight
| Size (inch) | Material | Approx. Weight (kg) |
|---|---|---|
| 1” | SS 304 | 0.25 |
| 2” | SS 316 | 0.50 |
| 3” | SS 316 | 0.90 |
Applications of Dairy Nipple
Dairy & Milk Processing
Units
Beverage Plants
Pharmaceutical
Food Processing &
Edible Oil Units
Chemical & Enzyme
Production
Dairy R&D and Quality
Testing Labs
Do you have questions?
What is the purpose of a Dairy Nipple?
Which industries commonly use Dairy Nipples?
Are Dairy Nipples reusable?
What material is best for Dairy Nipples?
