Compare Model Drawings, CAD & Specs Tube OD Elbow Radius Wall Thickness Availability Price
0.5 inch diameter 90 degree elbow butt weld vacuum fitting
90 Degree Elbow Fitting, Buttweld, 0.5 inch O.D., 304 Stainless Steel
$11.60
In Stock
0.5 in. 0.75 in. 0.065 in.
In Stock
0.75 inch diameter 90 degree elbow butt weld vacuum fitting
90 Degree Elbow Fitting, Buttweld, 0.75 inch O.D., 304 Stainless Steel
$12.20
In Stock
0.75 in. 1.125 in. 0.065 in.
In Stock
1 inch diameter 90 degree elbow butt weld vacuum fitting
90 Degree Elbow Fitting, Buttweld, 1.0 inch O.D., 304 Stainless Steel
$15.90
In Stock
1.0 in. 1.5 in. 0.065 in.
In Stock
1.5 inch diameter 90 degree elbow butt weld vacuum fitting
90 Degree Elbow Fitting, Buttweld, 1.5 inch O.D., 304 Stainless Steel
$17.10
In Stock
1.5 in. 2.25 in. 0.065 in.
In Stock
2 inch diameter 90 degree elbow butt weld vacuum fitting
90 Degree Elbow Fitting, Buttweld, 2.0 inch O.D., 304 Stainless Steel
$19.40
In Stock
2.0 in. 3.0 in. 0.065 in.
In Stock
2.5 inch diameter 90 degree elbow butt weld vacuum fitting
90 Degree Elbow Fitting, Buttweld, 2.5 inch O.D., 304 Stainless Steel
$36
In Stock
2.5 in. 3.75 in. 0.065 in.
In Stock
3 inch diameter 90 degree elbow butt weld vacuum fitting
90 Degree Elbow Fitting, Buttweld, 3.0 inch O.D., 304 Stainless Steel
$40
In Stock
3.0 in. 4.5 in. 0.065 in.
In Stock
4 inch diameter 90 degree elbow butt weld vacuum fitting
90 Degree Elbow Fitting, Buttweld, 4.0 inch O.D., 0.083 in. Thick 304 SS
$72
In Stock
4.0 in. 6.0 in. 0.083 in.
In Stock
4 inch diameter thick wall 90 degree elbow butt weld vacuum fitting
90 Degree Elbow Fitting, Buttweld, 4.0 inch O.D., 0.065 in. Thick 304 SS
$61
In Stock
4.0 in. 6.0 in. 0.065 in.
In Stock
90 Degree Elbow Fitting, Buttweld, 6.0 inch O.D., 304 Stainless Steel
$195
In Stock
6.0 in. 9.0 in. 0.083 in.
In Stock

Specifications

  • Component Type
    Buttweld 90 Degree Elbow Fitting
  • Series
    Series 23
  • Material
    304 Stainless Steel

Features

Buttweld Component Construction

Butt weld vacuum fittings and components are constructed of 304 or 304L welded, drawn, and annealed stainless steel tubing. For most vacuum process applications, this provides the best combination of the following critical features:

  • Low outgassing under vacuum
  • Chemically resistant
  • Consistent leak free welding
  • Minimized corrosion concentration points
  • Cost consistent with the above requirements

Buttweld components are fabricated using pulled port and 100% penetration TIG weld techniques. All welded components are leak free, carefully cleaned for high vacuum use and then packaged to remain clean until the time of installation.

Recommended Welding Techniques

Butt weld fittings are designed to be welded using internal (socket type) welding and external buttwelding. The most commonly used type of weld for high vacuum applications is a Tungsten Inert Gas (TIG) fusion weld, preferably without filler rod. For the best results, remove vacuum components from packaging in clean conditions during installation. Use clean gloves to handle the components and equipment in the absence of any fibers, fingerprint oils, or other greases.

General hints for good vacuum welds include:

  • Always start with clean and properly weld prepped components.
  • For internal welds, minimize warping by using only enough heat for 60-75% penetration.
  • For external buttwelds, make sure they are 100% penetration with no internal cracks or crevices.
  • Do not weld internally then externally around the entire circumference of the fittings
  • Make sure there is little or no gap between pieces to be welded
  • Ensure that all surfaces affected by the heat of the weld, especially the vacuum side, are purged properly with inert gas.