Reducing Union

Reducing Union for leak-tight instrument and hydraulic lines, available on MetalMitra in imperial and metric sizes, with mill-certified traceability on every lot.

Through MetalMitra you can source Reducing Union in stainless steel, carbon steel, alloy steel, duplex, nickel alloy and other grades, across a broad range of sizes and pressure ratings.

A reducing union joins two tubes of different outside diameters.

Precision tube fittings are compression fittings that use front and back ferrules to grip the tube and form a leak-tight seal without welding, flaring or threading the tube. They are used on instrumentation, hydraulic, pneumatic, sampling and analyser lines.

Product range

• Connectors — Male and female connectors, port connectors.
• Unions — Straight, reducing and bulkhead unions.
• Elbows, Tees & Crosses — Union and male / female branch fittings.
• Caps, Plugs & Ferrules — End closures and replacement ferrule sets.

Why engineers choose it

• Size Change — Joins different tube sizes.
• Single Body — No separate adapters needed.
• Leak-Free Seal — Twin-ferrule grip that stays sealed under vibration.
• No Hot Work — No welding, flaring or threading of the tube needed.

Reducing Union Material & Grades

Where it is used

• Instrumentation Lines
• Oil & Gas
• Petrochemical
• Chemical Processing
• Power Plants
• Hydraulic Systems
• Pneumatic Systems
• Analyser & Sampling Systems
• Offshore Platforms
• Pharmaceutical
• Semiconductor & Gas Lines
• Process Skids

Inspection & paperwork

Suppliers on MetalMitra back Reducing Union with the checks and paperwork your QA team expects.

• Dimensional & thread gauge inspection
• Ferrule hardness and fit-up check
• Visual inspection
• Positive Material Identification (PMI)
• Pressure / leak testing as applicable
• EN 10204 3.1 Mill Test Certificate
• Heat-code traceability on every body

The MetalMitra advantage

• Verified suppliers — Mills, manufacturers and stockists are reviewed by the MetalMitra team before they list.
• One RFQ, several quotes — Share size, grade and quantity once and compare offers side by side.
• Full traceability — Heat numbers, EN 10204 3.1 MTCs and third-party inspection on request.
• Delivered worldwide — Export-worthy packing and shipping to India, the Middle East, Africa, Europe and the Americas.

Get a quote

Tell us the specification, quantity and destination you need for Reducing Union. MetalMitra connects you with suppliers who can deliver.

Technical note: Values on this page are for reference. Always confirm against the governing standard, your purchase specification and the mill test certificate.