Alltech Reducing Union 3/8 in to 1/4 in Stainless Steel

Alltech 61030 Reducing Union – 3/8 in. to 1/4 in., Stainless Steel

The Alltech 61030 is a precision-machined stainless steel reducing union designed to seamlessly connect 3/8-inch and 1/4-inch outer diameter (OD) rigid tubing. Engineered for gas chromatography (GC), high-performance liquid chromatography (HPLC), and general high-pressure laboratory fluidic systems, this compression fitting provides a reliable, leak-tight seal. Manufactured from premium, chemically inert stainless steel, it is capable of withstanding the extreme pressures, structural stresses, and aggressive solvent conditions routinely encountered in analytical and preparative chemistry environments.

Technical Performance and Design

• High-Pressure Compression Seal: Utilizes a precision ferrule mechanism that swages tightly onto the rigid tubing during installation, creating a robust mechanical grip capable of holding extremely high line pressures without the need for welding or adhesives.

• Low-Dead-Volume Transition: The internal bore is precisely machined to ensure a smooth fluid or gas transition between the two disparate tubing diameters, minimizing dead volume and preventing turbulent flow or sample carryover.

• Premium Stainless Steel: The stainless steel construction provides exceptional mechanical strength, thermal stability up to hundreds of degrees Celsius, and excellent resistance to corrosive mobile phases and acidic gases.

• Tool-Actuated Installation: Designed to be easily tightened using standard open-ended wrenches, allowing technicians to rapidly reconfigure plumbing lines directly at the laboratory bench.

Product Specifications

• Catalog Number: 61030

• Fitting Type: Reducing Union (Compression)

• Tubing OD 1: 3/8 inch

• Tubing OD 2: 1/4 inch

• Material: Stainless Steel

• Typical Inclusions: Union Body, Nuts, and Ferrules

Key Benefits & Applications

• Chromatography Gas Manifolds: The standard hardware for stepping down bulk carrier gas lines (3/8") from large cylinders to instrument-level distribution lines (1/4") in GC workstation setups.

• Preparative HPLC Systems: Ideal for connecting varying tubing diameters in scale-up preparative chromatography systems, high-flow solvent delivery networks, or column packing stations.

• System Retrofitting: Allows researchers and engineers to rapidly adapt existing stainless steel plumbing networks to accommodate new pumps, detectors, or fluid reservoirs with different port dimensions.

• Hardware Reusability: While the compression ferrules permanently swage to the tubing, the union body and the threaded nuts can be disconnected and reconnected multiple times for routine system maintenance.

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