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S32W Concentric Reducer SMS

The S32W Concentric Reducer SMS is a high-quality sanitary welding reducer designed to transition between two different pipe diameters while maintaining a concentric (center-aligned) flow path. Manufactured in accordance with SMS 3008 standards, this fitting features weld ends that create a permanent, crevice-free joint for hygienic processing systems. Also referred to as an SMS Sanitary Weld Reducer, this fitting is essential for food and beverage processing, dairy production, pharmaceutical manufacturing, biotechnology, and cosmetic industries where sterility, cleanability, and smooth flow transition are critical.
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Key Features

  • Concentric Diameter Transition – Reduces pipe size from a larger diameter to a smaller diameter with aligned centerlines, ensuring smooth, uninterrupted flow

  • SMS 3008 Standard Compliance – Manufactured to exacting SMS 3008 dimensions and tolerances, ensuring interchangeability and compatibility with other SMS components

  • Short Pattern Design – Compact short weld pattern reduces overall system footprint while maintaining flow performance

  • Welding Ends – Beveled ends designed for automatic orbital or manual TIG welding, creating a permanent, leak-proof, and crevice-free joint

  • Hygienic Crevice-Free Interior – Smooth internal surface eliminates dead zones and turbulence, minimizing bacterial growth and ensuring sanitary integrity

  • High Corrosion Resistance – Available in 304 and 316L stainless steel, offering excellent resistance to process media and cleaning agents

  • Wide Size Range – Available from DN10 to DN150 (1/2" to 8") to suit diverse system requirements

  • Superior Surface Finish – Interior surface finish Ra ≤ 0.8 μm (mirror polish) and exterior finish available in matte or mirror polish

  • Multiple Wall Thickness Options – Available in thicknesses from 1.5mm to 3mm

Advantages

  • Smooth Flow Transition – Concentric design with gentle contours minimizes pressure drop and turbulence, ensuring efficient fluid handling

  • Permanent, Hygienic Joint – Welded connection provides a leak-proof, crevice-free seal that meets 3A sanitary standards for food and dairy equipment

  • Superior Cleanability – Crevice-free design supports CIP (Clean-In-Place) and SIP (Sterilize-In-Place) procedures without disassembly

  • Space-Saving Design – Short pattern reduces overall piping length, saving space and material costs

  • Long Service Life – Seamless or welded construction with stainless steel ensures exceptional durability under high-temperature and high-pressure conditions

  • Versatile Applications – Suitable for food processing, beverage production, dairy, pharmaceutical manufacturing, biotech, cosmetics, and chemical industries

  • Temperature Range – Operates reliably from -20°C to 135°C 

  • Full Traceability – Each fitting comes with material test reports and full traceability to ensure quality compliance

How It Works

The S32W Concentric Reducer SMS functions as a diameter transition component within a sanitary piping system:

  1. Positioning – The reducer is placed at the point where the piping system needs to transition from a larger diameter to a smaller diameter, with the larger end connected to the upstream pipe and the smaller end connected to the downstream pipe

  2. Welding – The beveled ends are welded to corresponding pipes using orbital or manual TIG welding techniques, creating a permanent, homogenous joint

  3. Flow Transition – Fluid flows from the larger pipe through the gradually tapering cone into the smaller pipe, with minimal turbulence and pressure loss

  4. Concentric Alignment – The centerlines of both ends are aligned, making this reducer ideal for vertical piping or horizontal applications where equal flow distribution is required

  5. Hygienic Operation – The welded joint has no threads, gaskets, or dead spaces, preventing bacterial accumulation and ensuring sanitary flow

  6. CIP/SIP Compatibility – The smooth, crevice-free interior allows cleaning and sterilization fluids to pass through effectively, maintaining system cleanliness without disassembly

Why Choose Us

  • Certified Quality – All our S32W Concentric Reducers are 3A Sanitary Standards certified, meeting the highest industry requirements for sanitary fittings-. We also hold CE certification and ISO 9001 quality management system certification, ensuring consistent product excellence

  • Premium Materials – We use only high-grade 304 and 316L stainless steel, offering exceptional corrosion resistance, weldability, and longevity

  • Precision Manufacturing – Every reducer is machined to tight tolerances with smooth surface finishes (Ra ≤ 0.8 μm) to meet hygienic standards

  • Stringent Quality Control – Each fitting undergoes dimensional inspection, surface finish testing, roundness verification, and material verification to ensure 100% compliance

  • Extensive Size Range – From DN10 to DN150 (1/2" to 8") , we offer a full range to meet your diameter transition needs

  • Short and Long Patterns – Available in short type and long type configurations to suit your installation requirements

  • Multiple Connection Options – Available with weld ends, clamp ends, thread ends, and union ends to suit your system requirements

  • Full Traceability – Every fitting is supplied with material test reports and traceable documentation for audit compliance

  • Competitive Pricing – Direct manufacturing capabilities allow us to offer factory-direct pricing without compromising quality

  • Expert Support – Our team of sanitary fitting specialists provides technical guidance on welding procedures, material selection, and system integration

FAQ

Q: What does "S32W" represent?
A: "S32W" is our series code for the SMS concentric weld reducer, indicating the fitting type, standard (SMS), and connection style (weld ends).

Q: What is the difference between concentric and eccentric reducers?
A: A concentric reducer has aligned centerlines on both ends, making it ideal for vertical piping and applications requiring equal flow distribution. An eccentric reducer has offset centerlines, which prevents air accumulation in horizontal piping and is commonly used in pump suction lines-.

Q: What materials are available?
A: Our S32W Concentric Reducers are available in 304 stainless steel and 316L stainless steel. 316L offers enhanced corrosion resistance for pharmaceutical and high-purity applications.

Q: What certifications do your products have?
A: Our fittings are 3A Sanitary Standards certified, CE certified, and manufactured under an ISO 9001 certified quality management system. Material test reports (EN 10204 3.1) are supplied with each order.

Q: What industries use this fitting?
A: The S32W Concentric Reducer is widely used in food and beverage processing, dairy production, pharmaceutical manufacturing, biotechnology, cosmetics, and chemical processing industries.

Conform to Swedish Milk Standards, or SMS
For Pipe acc. to SMS3008, ISO 2037
Max.Pressure: PN10
Max. Temperature: 250° F, except hose fittings are unrated.
Available with WAZ 3.1 in accordance with EN 10204

Wenzhou KASIN valve pipe fitting co.,ltd.

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CONTACT INFORMATION

If you have any questions or need help, feel free to contact with our team. We are available 24/7 by fax, 
e-mail or by phone. 
   valve@wzststeel.com
   +86-15858536788/+-86-577-86896059
  Binhai Industry Zone, Wenzhou, Zhejiang, China

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