IMPA: 734416

Stainless Steel Flareless Tee Unions for Marine Applications

Our stainless steel flareless tee unions are precision-engineered for demanding marine applications. Designed to create leak-proof branch connections in pipe and tube systems without the need for flaring or welding, these fittings are a reliable choice for shipboard hydraulic, pneumatic, and instrumentation lines. Constructed from AISI 316 stainless steel, they offer excellent corrosion resistance in saltwater environments, ensuring long service life even under continuous exposure to seawater and aggressive marine atmospheres.

These flareless tee unions feature a bite-type design that grips the tubing securely, providing a vibration-resistant connection that withstands the harsh conditions encountered on vessels. They are available in a range of sizes and thread configurations to fit common marine piping systems, making them a versatile solution for shipward repairs, retrofits, and new builds. Trust these unions to deliver a safe, dependable seal in critical fluid and gas transfer applications.

Key Features

Technical Specifications

MaterialAISI 316 Stainless Steel
Connection TypeFlareless (bite-type) tee union
Size Range1/4" to 1" OD (6 mm to 25 mm)
Thread OptionsNPT, BSP, Metric
Pressure RatingUp to 5000 psi (345 bar)
Temperature Range-40°C to +120°C (-40°F to 248°F)
StandardsASTM A276, DIN 2353
ApplicationHydraulic systems, instrumentation lines, lubrication systems, marine piping

Frequently Asked Questions

What is a flareless tee union?

A flareless tee union is a pipe fitting that connects three tubes or pipes at a 90-degree branch without requiring the pipe end to be flared. It uses a compression ferrule or bite ring to grip the tube, creating a secure and leak-tight seal.

What sizes are available?

Our stainless steel flareless tee unions are available for tubes from 1/4 inch to 1 inch outer diameter (6 mm to 25 mm). We also offer various thread types including NPT, BSP, and metric to suit your vessel's piping system.

Can these fittings be used with seawater?

Yes, the AISI 316 stainless steel construction provides excellent resistance to seawater corrosion, making these flareless tee unions suitable for marine applications where exposure to saltwater is common.

Are these fittings certified for marine use?

While our fittings meet ASTM A276 and DIN 2353 standards, they are designed for marine environments and are widely used on commercial and naval vessels. For specific classification society approvals, please contact our sales team for documentation.

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