Stainless Steel Union Tee
A Stainless Steel Union Tee is a type of instrumentation tube fitting designed to connect three tubes or pipes in a T-shaped configuration. It allows fluid or gas to flow in two different directions while providing the flexibility to easily disconnect and reconnect the pipeline due to the union design.
Union tee fittings are widely used in instrumentation systems, hydraulic systems, gas pipelines, and industrial fluid transfer applications where branching of flow is required. The union feature allows easy maintenance and system modification without removing the entire pipeline.
Manufactured using high-quality stainless steel materials, these fittings offer excellent corrosion resistance, high pressure capability, and long operational life, making them suitable for demanding industrial environments.
Types of Stainless Steel Union Tee
Equal Union Tee
Reducing Union Tee
Types by Connection Method
Compression Union Tee
Compression union tees are widely used in instrumentation tubing systems.
Features
- Double ferrule compression design
- Leak-proof sealing
- Easy installation without welding
Advantages
- High pressure resistance
- Excellent vibration performance
- Reusable and easy to maintain
Threaded Union Tee
Threaded union tees are designed with threaded ends to connect pipes or fittings.
Common Thread Types
- NPT (National Pipe Thread)
- BSPT (British Standard Pipe Taper)
- BSPP (British Standard Pipe Parallel)
Advantages
- Strong mechanical connection
- Suitable for industrial piping systems
- Easy integration with threaded pipelines
Materials Used in Stainless Steel Union Tee
Material selection plays a critical role in ensuring corrosion resistance, durability, and performance.
Stainless Steel 304 Union Tee
SS 304 is widely used due to its good corrosion resistance and cost-effectiveness.
Properties
- Excellent durability
- Good resistance to corrosion
- Easy fabrication and welding
Applications
- Water treatment plants
- Food processing equipment
- Industrial fluid systems
Stainless Steel 316 Union Tee
SS 316 offers superior resistance to chlorides and aggressive chemicals.
Properties
- Excellent corrosion resistance
- Suitable for marine environments
- High temperature tolerance
Applications
- Marine industry
- Chemical processing plants
- Pharmaceutical manufacturing
Stainless Steel 316L Union Tee
SS 316L has lower carbon content which improves weldability and corrosion resistance.
Properties
- Reduced carbide precipitation
- Ideal for hygienic environments
- Long service life
Applications
- Semiconductor industry
- Pharmaceutical processing
- Food and beverage production
Special Alloy Materials
For extreme environments, union tees can also be manufactured using special alloys such as:
- Duplex Stainless Steel
- Super Duplex Stainless Steel
- Monel
- Inconel
- Hastelloy
These materials provide exceptional resistance to corrosion, pressure, and temperature.
Sizes and Dimensions
Stainless steel union tees are available in both imperial and metric sizes to meet different industrial requirements.
Standard Tube Sizes
- 1/16″
- 1/8″
- 1/4″
- 3/8″
- 1/2″
- 3/4″
- 1″
Metric Tube Sizes
- 3 mm
- 6 mm
- 8 mm
- 10 mm
- 12 mm
- 16 mm
Pressure Rating
The pressure rating depends on tube size, material, and design, typically ranging from:
3000 PSI to 10000 PSI
Application
Semiconductor
Chemical / Petrochemical
Power Generation
Oil & gas
Marine
