Thin Film Materials Logo
Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
photo-hd-g_7w_150_std

Weldable Tube Tees

Introduction

Weldable Tube Tees are essential vacuum and process components designed to create branch connections in tubing systems through permanent welding. They are widely used in high-vacuum (HV) and ultra-high-vacuum (UHV) assemblies where leak integrity, mechanical strength, and clean internal geometry are critical. By eliminating demountable joints at the branch point, weldable tube tees help achieve compact layouts with minimal virtual leaks.

Detailed Description

Weldable tube tees are precision-machined fittings with three tube ends configured in a “T” geometry, allowing one main run with a perpendicular branch. They are typically manufactured from vacuum-grade stainless steel—most commonly 304L or 316L—to ensure excellent corrosion resistance, low outgassing, and compatibility with standard welding techniques such as TIG (GTAW).

The weld ends are supplied with straight, uniform wall thickness to support consistent weld penetration and smooth internal transitions after welding. Careful control of concentricity and surface finish minimizes turbulence, particle trapping, and dead volume—key considerations for vacuum performance and process repeatability.

These tees can be integrated into systems that later terminate in CF, ISO, or KF interfaces, making them highly flexible building blocks for custom manifolds and chambers.

Applications

  • High-vacuum and UHV tubing manifolds

  • Thin film deposition systems (PVD, sputtering, evaporation)

  • Semiconductor process gas and vacuum lines

  • Analytical and surface science instruments

  • Custom-built research and industrial vacuum assemblies

Technical Parameters

ParameterTypical Value / RangeImportance
MaterialStainless Steel 304L / 316LLow outgassing, weldability
ConfigurationTube Tee (3-way)Branch connection
Tube ODStandard metric or inch sizes (custom)System compatibility
Wall ThicknessMatched to vacuum tubingUniform weld quality
Joining MethodTIG / orbital weldingPermanent, leak-tight joints
Surface FinishAs-machined / optional electropolishCleanliness & flow

Comparison with Related Components

ComponentKey AdvantageTypical Application
Weldable Tube TeeNo demountable seals, compactPermanent HV/UHV manifolds
KF TeeFast assemblyModular lab systems
CF TeeUHV sealing, demountableInstrument interfaces

FAQ

QuestionAnswer
Are these suitable for UHV systems?Yes, when properly welded and cleaned, they are ideal for UHV.
What welding method is recommended?TIG or orbital welding is commonly used for best results.
Are custom tube sizes available?Yes, OD, wall thickness, and branch dimensions can be customized.
Can electropolishing be provided?Yes, electropolished finishes are available on request.
How are they cleaned before shipment?Cleaned for vacuum service and packaged to prevent contamination.

Packaging

Our Weldable Tube Tees are cleaned, capped on all tube ends, and individually packed to protect the sealing and weld surfaces. Export-grade cartons or wooden crates are used to ensure safe transportation and maintain cleanliness.

Conclusion

Weldable Tube Tees provide a robust, space-efficient solution for creating permanent branch connections in vacuum tubing systems. With vacuum-grade materials, precise geometry, and customizable dimensions, they are ideal for demanding HV and UHV applications where long-term reliability and cleanliness are essential.
For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.

Ordering Table

Weldable Tube Tees

Drawing WallThickness DimA TubeOD Finish Note Part Number
Tooltip 0.04 0.75 0.38 Tumbled G-7W-038
Tooltip 0.05 0.75 0.5 Tumbled G-7W-050
Tooltip 0.04 1 0.75 Tumbled — G-7W-075
Tooltip 0.07 1.88 0.75 Tumbled — G-7W-075HW
Tooltip 0.07 1 0.75 Tumbled — G-7W-075T
Tooltip 0.07 1.88 1 Tumbled — G-7W-100
Tooltip 0.12 9.5 10 Tumbled — G-7W-1000
Tooltip 0.07 2.25 1.5 Tumbled — G-7W-150
Tooltip 0.07 2.25 1.5 Beadblasted — G-7W-150-B
Tooltip 0.07 2.41 1.5 Tumbled — G-7W-150H
Tooltip 0.07 2.41 1.5 Beadblasted — G-7W-150H-B
Tooltip 0.07 3 2 Tumbled — G-7W-200
Tooltip 0.07 2.61 2 Tumbled — G-7W-200H
Tooltip 0.07 2.61 2 Beadblasted — G-7W-200H-B
Tooltip 0.07 3 2.5 Tumbled — G-7W-250
Tooltip 0.07 3.75 2.5 Tumbled — G-7W-250V
Tooltip 0.07 3.25 3 Tumbled — G-7W-300
Tooltip 0.08 3.88 4 Tumbled — G-7W-400
Tooltip 0.08 4.87 4 Tumbled — G-7W-400V
Tooltip 0.08 4.25 5 Tumbled — G-7W-500
Tooltip 0.08 5 6 Beadblasted — G-7W-600-B
Tooltip 0.08 6.06 6 Beadblasted — G-7W-600V-B
Tooltip 0.12 7 8 Tumbled — G-7W-800

Reviews

There are no reviews yet.

Be the first to review “Weldable Tube Tees”

Your email address will not be published. Required fields are marked *

Related Products

Related products

FAQ

Tube fittings are designed for tubes (measured by outside diameter and wall thickness) used in high-pressure and instrumentation applications, whereas pipe fittings are for pipes (identified by nominal pipe size) primarily used in fluid transport.

 

Common valve types include ball valves, gate valves, check valves, butterfly valves, and globe valves. Each serves a specific function—from quick shutoff (ball/gate valves) to flow regulation (globe valves).

 

  • For tubing, measure the outside diameter; for pipes, refer to the nominal pipe size (using conversion charts if needed). Always match the valve or fitting size to your pipe’s dimensions and flow requirements.

  • Frequently used thread types include NPT (National Pipe Tapered), BSP (British Standard Pipe), and UNC, along with slip-fit options that rely on compression or fusion rather than threads.

Interchangeability depends on manufacturer specifications and certification. Always verify compatibility via manufacturer guides or certified interchangeability charts.

 

  • A coupling is a short, straight fitting used to join two pipes or tubes. It provides a secure, leak-tight connection and can sometimes serve to extend or repair piping runs.

Consider valve type, pressure and temperature ratings, material compatibility with your fluid, actuation method (manual or automatic), and maintenance requirements.

 

  • Valves regulate flow by opening, closing, or partially obstructing the pathway. Their mechanisms (such as the rotation of a ball or the linear movement of a gate) determine the speed and precision of flow control.

  • A flange is a flat, circular component used to connect pipes, valves, or other equipment. Bolted together with gaskets, flanges provide a secure, leak-proof joint that facilitates both assembly and maintenance.

  • Manual valves require physical operation via handles or levers, whereas actuated valves use mechanisms—pneumatic, electric, or hydraulic—to open and close automatically or remotely.

  • Issues include leaks caused by improper installation, over-tightening, degraded seals, material incompatibility, and fatigue from repeated cycling. Regular inspection and proper installation practices help mitigate these problems.

Regular maintenance involves periodic inspections, cleaning or replacing worn seals, ensuring proper torque during installation, and adhering to manufacturer guidelines and local plumbing codes to preserve system integrity.

 

Shopping Cart
Scroll to Top