Importance

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Abstract

A blockage prevention device is releasably supported within a vent pipe of a plumbing system having an open top end which is externally vented through the roof of a building. The device has a hollow venting tube with an outer diameter which is less than an inner diameter of the vent pipe and a suspension element fixed to the venting tube having an overall width which is greater than the inner diameter of the vent pipe to suspend the venting tube within the vent pipe. The suspension element is spaced above the bottom end of the venting tube for engaging the top end of the vent pipe such that i) the bottom end of the venting tube is suspended within the vent pipe in open communication with the vent pipe, and ii) the top end of the venting tube communicates externally of the vent pipe.

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First Claim