4"/3" ISO/IDF 1.4404 (AISI 316L) Sanitary Clamp Concentric Reducer

Product Overview

This sanitary clamp concentric reducer is designed for hygienic piping systems requiring a smooth, centered transition between two different pipe sizes. Manufactured from premium AISI 316L / 1.4404 stainless steel and compliant with ISO/IDF standards, it is widely used in food & beverage, dairy, pharmaceutical, and biotechnology industries where cleanliness and corrosion resistance are critical.
Model: ISO/IDF Sanitary Clamp Concentric Reducer
Size: 4"× 3"
Standard: ISO 2037 / IDF 122
Material Standard: ASTM A270 / EN 10357

Key Features

Premium Material — Constructed from AISI 316L / 1.4404 stainless steel for superior corrosion resistance and durability in demanding environments.
Hygienic Design — Concentric geometry ensures smooth, turbulence-free flow with no dead zones, making it ideal for CIP/SIP cleaning processes.
Dual Standard Compliance — Meets both ISO 2037 and IDF 122 standards, ensuring broad compatibility across international piping systems.
Quality Manufacturing — Produced under ISO 9001:2015 and GB/T19001-2016 certified facility standards for consistent, high-quality output.
Full Traceability — Material Test Reports (MTRs) and Certificates of Conformity (COC) available upon request for full documentation and compliance needs.
Clamp Connection — Quick and tool-friendly clamp-end connection for easy installation, removal, and maintenance.

ISO/IDF Concentric Reducer Clamp

Dimensions & Sizes

Core Principles of ISO 2037 / IDF 122 for Sanitary Fittings

ISO 2037 (International Organization for Standardization) and IDF 122 (International Dairy Federation) are globally recognized standards for sanitary piping systems, widely adopted in dairy, food, beverage, and pharmaceutical industries. These joint standards define the dimensions, connections, and hygienic requirements for sanitary fittings, ensuring interchangeability and system compatibility worldwide.

Materials and Surface Finish

Materials: Mandates the use of AISI 316L (1.4404) or AISI 304 (1.4301) stainless steel, ensuring excellent corrosion resistance to withstand cleaning agents and product media.

Surface Finish: Product contact surfaces must be smooth. Standard mechanical polishing achieves an internal surface roughness of Ra ≤ 0.8 µm, effectively preventing microbial adhesion and meeting the stringent requirements of CIP/SIP.

Foundation of Dimensions and Interchangeability

The standards strictly define the tolerances for the outside diameter, wall thickness, and bend radii of the piping system. For welded elbows, this means their end connection dimensions perfectly match the tubes and other fittings within the ISO system, providing the fundamental guarantee for subsequent high-quality, crevice-free automatic orbital welding.

Hygienic Design for Welding

The standards implicitly require that the entire system must adhere to the no-dead-leg principle. Therefore, the internal weld of a welded elbow must achieve complete penetration, a smooth internal weld reinforcement profile, and absolutely no concavity. The ultimate goal is to form a continuous, smooth, and non-retentive flow path after being welded to the pipe.

International Compliance and System Integration

Welded fittings compliant with ISO 2037/IDF 122 are ideal for constructing piping systems that meet the EU Pressure Equipment Directive (PED) or EHEDG hygienic design guidelines. They ensure full traceability from raw material to finished product, supporting global market access requirements.