Flange Finder

To find a particular flange, start by clicking the waveguide size below, and refine the seach on the following page. These are the more common flanges - TWS has a large library of flange standards on record.

Notes:

Material

The flange and waveguide materials should match i.e. aluminium flanges for aluminium waveguide or brass flanges for copper or brass waveguide.

Choke flanges

A choke flange must be used together with a plain flange - it is usually used for very high powers to improve the apparent contact of the joint, but as the choke is frequency sensitive, the match seen at the top and bottom of the band is generally worse than a plain / plain combination. .An alternative to a choke / plain joint for high powers is a plain / plain joint together with a high power shim. The shims are generally crushable (single use) or have sprung fingers to ensure good contact. Choke flanges are more sensitive to misalignment so the correct bolts should be used - fixing kits can be supplied to suit.

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