Importance

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Abstract

A valved conduit includes two substantially flangeless pipes adhesively bonded end-to-end at respective end walls of the two pipes at a joint; a butterfly valve including a protruding stem and a protruding anti-rotation tab, the butterfly valve being disposed inside the two pipes at the joint with the stem and the anti-rotation tab being engaged by end walls of the two pipes at the joint, the stem extending through the joint and beyond the pipes. A method of making a valved conduit includes shaping end walls of two substantially flangeless pipes to form substantially planar end wall surfaces, each end wall also including surfaces defining an opening for receiving a valve stem and a slot for receiving a valve anti-rotation tab; applying an adhesive to the end wall surfaces; positioning a butterfly valve including a stem and an anti-rotation tab within the two pipes with the stem and the anti-rotation tab between the end walls of the two pipes and the stem and the anti-rotation tab in contact with the opening and the slot, respectively, the stem extending through the opening beyond the pipes; and bringing the substantially planar end wall surfaces into contact and adhesively bonding the substantially planar end wall surfaces of the two pipes together at a joint.

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First Claim