(SWG) There are three types - concentric, eccentric and ventury. A swage is used to connect buttwelded and screwed fittings/pipe to smaller or larger buttweld or screwed fittings/pipe.

"Concentric" swage centerline of the inlet and outlet is at the same level.

"Eccentric" swage is offset either on the top or bottom of the line level.

"Ventury" swage creates a smooth flow.

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