316L Stainless Steel Union Reducers

316L stainless steel straight reducing compression unions for connecting tubes of different outside diameters in laboratory, analytical and fluid-handling systems. Available in selected fractional-inch size combinations.

Pricing available to approved customers

Add this product to a quote request, or sign in to view your pricing.

Tube Size (Large OD × Small OD)

This combination does not exist.

Qty

No account required. Add the products you need, then send your request to our technical sales team.

Request Pricing Access

S4R 316L Stainless Steel Straight Reducing Tube Unions provide a compact in-line transition between tubes of different outside diameters. Designed for laboratory, analytical and fluid-handling systems, their 316L stainless steel construction combines corrosion resistance with mechanical durability, while the compression / ferrule-type connection allows installation without welding the fitting directly to the tubing. Selected fractional-inch reducing combinations are available for common laboratory and instrumentation assemblies.

Key Features

✓ 316L stainless steel construction

✓ Direct transition between different tube outside diameters

✓ Compression / ferrule-type tube connections

✓ Weld-free fitting installation

✓ Compact straight reducing configuration

✓ Selected fractional-inch tube-size combinations

Typical Applications

• Laboratory gas and fluid lines

• Analytical and scientific instrumentation

• Electrochemical research equipment

• Chemical and solvent transfer systems

• Process and vacuum instrumentation

• Tube-size transition assemblies

Technical Specifications

Fitting Type	Straight reducing tube union
Connection	Unequal-size tube × tube
Material	316L Stainless Steel
Surface Finish	Chrome-plated
Connection Type	Compression / ferrule-type
Configuration	Straight reducing
Tube Sizing	Fractional Inch

Available Configurations

Large Tube OD	Small Tube OD	Configuration
1/4"	1/8"	1/4" × 1/8"
3/8"	1/8"	3/8" × 1/8"
1/2"	1/8"	1/2" × 1/8"
3/8"	1/4"	3/8" × 1/4"
1/2"	1/4"	1/2" × 1/4"

Select the tube-size combination corresponding to both tubes in the assembly. Tube sizes refer to nominal outside diameter.

Connection & Design

• Straight reducer geometry provides an in-line transition between two different tube outside diameters.

• Compression / ferrule-type connections allow installation without welding the fitting directly to the tubing.

• The selected configuration must correspond to the actual outside diameters of both tubes.

• The reducing configuration enables direct tube-size transitions while maintaining a compact in-line assembly.

Technical Notes

• Verify both tube outside diameters before selecting the fitting configuration.

• Tubing should be clean, round and free from surface damage in the connection areas.

• Tube material and wall thickness should be appropriate for compression fitting installation.

Package Contents

1×

316L Stainless Steel Straight Reducing Tube Union

Selected tube-size combination

Installation & System Compatibility

Verify both tube outside diameters, fitting configuration, tube material and chemical compatibility before installation. Operating limits depend on the complete assembly, including tube material, wall thickness, operating temperature, process media and installation conditions. For pressure-critical, vacuum-critical or temperature-critical applications, contact S4R to confirm suitability for the intended operating conditions.

316L Stainless Steel Union Reducers

0.00 € 0.0 EUR 0.00 €

Pricing available to approved customers

Key Features

Typical Applications

Key Features

Typical Applications

Our latest content