Est Group, Inc.

Ka′ren Sarkissian

Alex Kotlyar

Danko Kobziar

Andrew Hall

Michael Hvorecny

A pneumatic test gun for use in performing a leak test on a tube is provided. The pneumatic test gun has a handle for being manually gripped by an operator, a distal end portion for insertion into a tube to be tested, and a proximal end plate from which the distal end portion extends and which is adapted to be abutted against an open end of the tube to be tested. The distal end portion includes a support tube providing a flow path for compressed air into a tube to be tested, a longitudinally-compressible and radially-expandable annular seal located on the support tube, and a self-activating retaining element assembly adapted for radial-expansion into engagement with an inner diameter of the tube to be tested to improve retention of the distal end portion within the tube when the tube is pressurized during a leak test. A method is also provided.

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Langhorne, PA, United States of America

Ka′ren Sarkissian