Conduit flow controller

In a conduit flow controller for selectively controlling the flow of a fluid through an elongated conduit including a continuous sidewall and having had a portion of the sidewall removed thereby forming an aperture, said aperture defined by a continuous peripheral edge of the sidewall of the conduit, the improvement comprising;

• an elongated housing sealingly connected to the conduit surrounding the aperture, a conduit stopper movably mounted in the housing and being positionable in the conduit through the aperture, said conduit stopper including;
• a deformable sealing element having a pair of substantially flat sides and a peripheral edge being adapted for sealing engagement with the interior of the conduit, a carrier sealingly connectable with the sealing element, said carrier having spaced forks receiving the sealing element between the forks, and a resilient seal mounted along a substantial portion of the entire length of the outer surface of each of said forks, said resilient seal engaging a portion of the continuous edge in cooperation with the sealing element to form a continuous seal with a portion of the continuous edge defining the aperture in the conduit, said element being cooperative with said resilient seal to close a portion of the elongated conduit adjacent to the aperture to prevent the flow of fluid along the elongated conduit past the sealing element and the resilient seal.