AWF TL31W Concentric Reducer

Key Features

• Premium 316L Stainless Steel Construction – Offers superior corrosion resistance and durability in aggressive processing environments, including pharmaceutical, bioprocessing, semiconductor, cosmetics, food processing, and beverage markets.

• PL Finish – SF1 Surface Quality – OD is 32Ra mechanically polished and ID is 20Ra mechanically polished, creating an ultra-smooth, hygienic surface that minimizes bacterial adhesion, prevents product residue buildup, and facilitates thorough Clean-In-Place (CIP) cleaning.

• Controlled Sulfur Content – 316L stainless steel material and dimensions meet all orbital welding specifications with controlled sulphur, ensuring consistent, high-quality welds and repeatable fabrication results.

• ASME BPE Compliant – Manufactured to meet the latest edition of the ASME BPE International Standard for Bioprocessing Equipment, ensuring global industry acceptance and regulatory compliance.

• 3-A Certified – Certified to 3-A Sanitary Standards for Sanitary Fittings, Number 63-03 (Authorization Number 621) , meeting the highest hygienic standards for food, dairy, and pharmaceutical applications.

• CRN Certified – CRN certification provides additional regulatory compliance for pressure equipment in Canadian jurisdictions.

• Full Material Traceability – Material Test Reports (MTRs) are included with each fitting inside a resealable bag, traceable through the Job Number marked on each fitting.

• Color-Coded Cap Identification – PL finish features blue caps and PM finish features white caps for easy finish identification at a glance.

• ASME BPE Product Markings – Each fitting is marked with job number, 316L, part number, heat number(s), surface finish code, and ASME BPE per ASME BPE 2012 DT-10.1.

• Protected Packaging – All fittings are capped to prevent damage and contamination during storage and transit.

How It Works

The AWF TL31W Concentric Reducer functions as a diameter transition fitting that connects two pipe sections of different sizes within a high-purity or sanitary piping system.

1. Butt Weld Connections – Both ends feature butt weld connections, which are permanently welded to the tubing on each side. This creates a continuous, seamless joint that eliminates potential leak points and provides superior mechanical strength.

2. Concentric Design – The concentric geometry maintains a common centerline between the larger and smaller diameter ends. This ensures uniform flow distribution, minimizes turbulence, and prevents product entrapment.

3. Flow Transition – As process fluid flows from the larger diameter pipe into the reducer, the gradual taper smoothly transitions the flow to the smaller diameter, maintaining system integrity and flow efficiency.

4. Integrated System – Once both ends are welded, the reducer becomes a permanent, rigid part of the piping system, enabling CIP cleaning, pressure retention, and long-term reliable operation.

This design is particularly valuable in biopharmaceutical and high-purity applications where permanent welded joints provide the highest level of cleanliness, zero dead legs, and full traceability.

Why Choose Our AWF TL31W Reducer?

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

• Unmatched Surface Finish – The PL finish (SF1) with 32Ra OD and 20Ra ID provides one of the smoothest surfaces available in the industry, critical for hygienic and high-purity applications.

• Orbital Weld Ready – Controlled sulfur content ensures compatibility with orbital welding requirements, delivering consistent, repeatable weld quality.

• Certified Quality – 3-A Certified and CRN Certified, with full compliance to ASME BPE standards, ensuring regulatory acceptance across global markets.

• Complete Traceability – MTRs included with every fitting, traceable via job number markings, providing full material certification and quality documentation.

• Easy Identification – Blue caps for PL finish and white caps for PM finish allow for instant visual identification of surface finish.

• Protected Delivery – Capped packaging prevents damage and contamination, ensuring your fittings arrive in pristine condition.

• Broad Industry Compatibility – Cross-referenced with Dixon T31W, FNW Figure 31W, and Bradford™ series, ensuring seamless integration with existing systems.

• Versatile Applications – Suitable for pharmaceutical, bioprocessing, semiconductor, cosmetics, food processing, and beverage industries.

Technical Specifications

Frequently Asked Questions (FAQ)

Q1: What does "PL Finish – SF1" mean?

A: PL Finish – SF1 is a surface finish specification where the Outside Diameter (OD) is 32Ra mechanically polished and the Inside Diameter (ID) is 20Ra mechanically polished. This ultra-smooth finish is essential for hygienic applications as it minimizes bacterial adhesion, prevents product buildup, and facilitates effective CIP cleaning.

Q2: What is the difference between PL finish and PM finish?

A: PL finish (SF1) features a 32Ra OD and 20Ra ID mechanical polish, while PM finish (SF4) offers a 32Ra OD and 20Ra ID with an electropolished ID. PL finish is identified by blue caps, and PM finish by white caps.

Q3: What certifications does the TL31W reducer hold?

A: The TL31W is 3-A Certified under Sanitary Standards Number 63-03 (Authorization 621) and CRN Certified. It is also manufactured to meet the latest ASME BPE International Standard.

Q4: What industries commonly use the TL31W concentric reducer?

A: The TL31W is widely used in pharmaceutical, bioprocessing, semiconductor, cosmetics, food processing, and beverage industries. It is also suitable for dairy, personal care, and chemical processing applications.

Q5: Are Material Test Reports (MTRs) provided with each fitting?

A: Yes. MTRs are included inside the resealable bag with each fitting. They are traceable through the Job Number found on each fitting, ensuring full material certification and quality assurance.

Q6: What markings are on the TL31W fitting?

A: Per ASME BPE 2012 DT-10.1, each fitting is marked with the job number, 316L, part number, heat number(s), surface finish code, and ASME BPE. If space is limited, not all markings may be present.

Q7: Is this reducer compatible with Dixon or FNW systems?

A: Yes. The AWF TL31W is cross-referenced with Dixon T31W series- and FNW Figure 31W series, ensuring broad compatibility with existing systems.

Q8: Can this fitting be used with orbital welding?

A: Yes. The 316L stainless steel material and controlled sulfur content meet all orbital welding specifications, ensuring consistent, high-quality welds.

Q9: How are the fittings protected during shipping?

A: All fittings are capped to prevent damage and contamination during storage and transit. The caps also provide easy finish identification by color