Inflatable Elastomeric Plug For A Dual Containment Piping System

摘要

An inflatable annular plug for use in creating a seal between an outer conduit and an inner conduit in a dual containment piping system comprises an annular structure for fitting into the piping system. A first connector is bonded to the plug for enabling the plug to be inflated by an external fluid source. A second connector extends through the plug in an axial direction for enabling fluid to flow through the plug and is bonded to the plug at both entrance and exit points. An outer surface of the plug is formed with a plurality of circumferential ribs and lands to form a plurality of axially spaced seals between the outer conduit and the plug. The plug is used in conjunction with a second plug to form a sealed test space between plugs.