PFA Straight Union Reducers

PFA straight reducing union for connecting fluoropolymer tubing of different outside diameters in laboratory, chemical and fluid-handling systems. Available in selected metric and fractional size combinations.

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S4R PFA Straight Union Reducers are designed to connect two fluoropolymer tubes with different outside diameters in laboratory, chemical and fluid-handling systems. Their PFA construction provides broad chemical resistance while the compact straight configuration enables clean transitions between selected tubing sizes in analytical, electrochemical and laboratory fluid-transfer assemblies.

Key Features

✓ PFA fluoropolymer construction

✓ Straight connection between different tube outside diameters

✓ Broad chemical resistance for demanding laboratory fluids

✓ Compact inline configuration

✓ Selected metric and fractional size combinations

✓ Designed for fluoropolymer laboratory tubing systems

Typical Applications

• Laboratory chemical and reagent transfer

• Electrolyte and solvent handling systems

• Electrochemical and battery research equipment

• Analytical and scientific instrumentation

• Transitions between different tubing diameters

• Corrosive fluid-handling assemblies

Technical Specifications

Fitting Type	Straight union reducer
Function	Connects tubing with different outside diameters
Material	PFA
Configuration	Inline / straight
Tube Sizing	Metric / Fractional Inch
Standard S4R Variants	Ø8 × Ø6 mm / 3/8" × 1/4" / 1/2" × 1/4" / 1/2" × 3/8"

Dimension Reference

A = Overall Length • B = Small End Length • C = Large End Length • Orifice = Internal Passage Diameter • HEX = Hexagonal Body Size

Available Sizes & Dimensions

Large Tube OD	Small Tube OD	Orifice	A	B	C	HEX
Ø8 mm	Ø6 mm	—	—	—	—	—
3/8"	1/4"	Ø3.8 mm	69 mm	24.6 mm	26.4 mm	17.5 mm
1/2"	1/4"	Ø3.8 mm	73 mm	24.5 mm	30.1 mm	23.8 mm
1/2"	3/8"	Ø6.3 mm	73 mm	26.5 mm	30.0 mm	23.8 mm

Dimensions shown are supplier-stated nominal values. Contact us for detailed dimensional data for the Ø8 × Ø6 mm variant.

Package Contents

1×

PFA Straight Union Reducer

Selected tube size combination

Chemical & Installation Compatibility

Verify tubing outside diameter, fitting size and chemical compatibility before installation. Metric and fractional tubing sizes are separate dimensional standards and should not be considered interchangeable. Operating pressure and temperature limits depend on the complete fitting and tubing system and are not specified here because these values have not yet been confirmed for this reducer series. For pressurized, vacuum-critical or safety-critical applications, verify the intended operating conditions before use.

PFA Straight Union Reducers

0.00 € 0.0 EUR 0.00 €

Pricing available to approved customers

Key Features

Typical Applications

Key Features

Typical Applications

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