2WUL 180 Degree Return Bend

Key Features

• Premium 316L Stainless Steel Construction – Offers outstanding resistance to corrosion, oxidation, and chemical attack, making it ideal for food, dairy, beverage, pharmaceutical, and cosmetic processing environments.

• 32Ra Mechanical Polished Finish (ID & OD) – Both interior and exterior surfaces are precision finished to 32Ra， ensuring a smooth, bacteria-resistant surface that minimizes product buildup, reduces pressure drop, and facilitates thorough CIP cleaning.

• Butt Weld Connection – The weld ends create a permanent, flush connection to tubing or other fittings, eliminating potential leak points and providing superior mechanical strength.

• Standard 1.5 x Tube Diameter Bend Radius – Bends are manufactured with a standard radius of 1.5 times the tube diameter, ensuring optimal flow and structural integrity.

• Full Material Traceability – Material Test Reports (MTRs) are available upon request, ensuring complete quality assurance and compliance.

• 3-A Sanitary Standards Certified – Meets 3-A Sanitary Standards Number 63-03/63-04 for sanitary fittings (Authorization Number 621), ensuring compliance with the highest hygienic standards.

• Multiple Finish Options – Available in polished, unpolished, #3, #5, and electropolish finishes to suit diverse application requirements.

• Wide Size Range – Available from 1" to 4" tube OD to accommodate diverse system requirements.

• Other Alloys Available – Available in other alloys upon special request.

How It Works

The 2WUL 180 Degree Return Bend functions as a directional change fitting that reverses fluid flow within a piping system.

1. 180° Flow Reversal – The fitting creates a U-shaped bend that changes the direction of flow by 180 degrees-, allowing the pipeline to turn back on itself in a compact footprint.

2. Butt Weld Installation – Both ends of the fitting are permanently welded to the tubing of the process line-. This creates a continuous, seamless joint that eliminates potential leak points and provides superior mechanical strength.

3. Smooth Flow Path – The 1.5 x tube diameter bend radius ensures a gradual directional change that minimizes turbulence, reduces pressure drop, and prevents product degradation.

4. Hygienic Surface – The 32Ra polished finish on both ID and OD provides a smooth, non-porous surface that resists bacterial adhesion and facilitates thorough cleaning.

This design is particularly valuable in hygienic sanitary applications where permanent, leak-free connections and smooth, cleanable surfaces are critical requirements.

Why Choose Our 2WUL Return Bend?

• Superior Material Quality – Made from 316L stainless steel, the low-carbon variant offers enhanced weldability and superior corrosion resistance compared to 304 stainless steel.

• Hygienic Design – The 32Ra polished finish on both ID and OD reduces bacterial adhesion and residue buildup, critical for food, dairy, beverage, and pharmaceutical applications.

• Certified Quality – 3-A Certified products ensure compliance with rigorous industry standards for sanitary fittings.

• Complete Traceability – Material Test Reports (MTRs) available upon request for full quality documentation.

• Industry Compatibility – Interchangeable with major brands including Dixon (B2WUL) , Steel & O'Brien (2WU) -, and CSI sanitary fitting lines.

• Permanent, Reliable Installation – The butt weld connection creates a permanent joint that outperforms mechanical fittings in high-vibration, high-temperature, and high-pressure applications-.

• Versatile Applications – Suitable for food processing, dairy, beverage, personal care, cosmetics, pharmaceutical, chemical processing, wineries, breweries, and distilleries.

• Optimized Flow Characteristics – The 1.5 x tube diameter bend radius ensures optimal flow with minimal pressure drop.

Technical Specifications

Frequently Asked Questions (FAQ)

Q1: What does "2WUL" mean in the product name?

A: "2WU" is the industry designation for a weld-end 180-degree return bend in sanitary fitting nomenclature-. The "L" suffix typically indicates the long radius version. The "2WUL" model is a butt weld fitting that is welded to connect to tubing or other fittings for a permanent and flush connection.

Q2: What is the difference between 304 and 316L stainless steel for this fitting?

A: 316L stainless steel contains molybdenum, which provides superior corrosion resistance compared to 304, particularly in chloride-rich environments such as food processing, dairy, and pharmaceutical applications. The "L" designation indicates low carbon content, which enhances weldability and reduces the risk of intergranular corrosion after welding.

Q3: What does "32Ra finish" mean and why is it important?

A: 32Ra refers to the surface roughness average of 32 microinches. This smooth finish is critical in sanitary applications because it minimizes bacterial adhesion, prevents product residue buildup, reduces pressure drop, and facilitates thorough Clean-In-Place (CIP) cleaning.

Q4: What is the bend radius of the 2WUL return bend?

A: The 2WUL return bend features a standard bend radius of 1.5 times the tube diameter. This ensures optimal flow characteristics with minimal turbulence and pressure drop while maintaining structural integrity.

Q5: What industries commonly use the 2WUL 180 Degree Return Bend?

A: The 2WUL Return Bend is widely used in food processing, dairy production, beverage manufacturing, personal care, cosmetics, pharmaceutical, and chemical processing industries. It is also commonly found in heat exchangers and cooling coils where fluid needs to reverse direction-, as well as wineries, breweries, and distilleries.

Q6: Are Material Test Reports (MTRs) available?

A: Yes, Material Test Reports (MTRs) are available upon request for every 2WUL return bend, providing full material certification and traceability.