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316L Stainless Steel Union Tees

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316L stainless steel equal tube tees with double-ferrule compression connections for laboratory gas, fluid and analytical systems. Metric and fractional sizes available.

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S4R 316L Stainless Steel Tube Union Tees provide a compact three-way connection between tubes of identical outside diameter. Designed for laboratory, analytical and fluid-handling systems, their forged 316L stainless steel body combines corrosion resistance with mechanical durability. Double-ferrule compression connections provide a practical solution for branching gas and fluid lines without welding the fitting directly to the tubing.

Key Features

316L stainless steel construction
Forged-body construction
Equal-size three-way tube connection
Double-ferrule compression connections
Metric and fractional tube size options
Compact tee configuration for laboratory installations

Typical Applications

Laboratory gas and fluid distribution
Analytical and scientific instrumentation
Electrochemical research equipment
Chemical and solvent transfer systems
Process and vacuum instrumentation
Three-way tubing and manifold assemblies
Technical Specifications
Fitting Type Equal tube union tee
Connection Equal-size tube × tube × tube
Material 316L Stainless Steel
Body Construction Forged body
Connection Type Double-ferrule compression
Configuration Equal three-way tee
Tube Sizing Metric / Fractional Inch
Available Tube Sizes
Size Standard Standard Tube OD
Metric Ø4 / Ø6 / Ø8 / Ø10 / Ø12 mm
Fractional Inch 1/8" / 1/4" / 3/8" / 1/2"
All three ports use the same nominal tube outside diameter. Metric and fractional tube sizes follow separate dimensional standards.
Connection & Design
Equal tee geometry provides three connections for tubing of identical outside diameter.
Double-ferrule compression connections provide a mechanical tube connection without welding the fitting to the tubing.
The selected fitting size must correspond to the outside diameter of all three connected tubes.
The tee configuration enables compact branching of laboratory gas and fluid lines.
Technical Notes
Verify tube outside diameter before selecting the fitting size.
Tubing should be clean, round and free from surface damage in each connection area.
Tube material and wall thickness should be appropriate for double-ferrule compression fitting installation.
Package Contents
316L Stainless Steel Tube Union Tee
Selected tube size
Installation & System Compatibility
Verify tube outside diameter, fitting size, tube material and chemical compatibility before installation. Metric and fractional tube sizes follow separate dimensional standards and should not be considered interchangeable. 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.

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