| 摘要 |
A serviceable multiport conversion system (40) for a conventional butterfly valve includes two fittings (31, 32). A first "T" fitting (32) contains two passageways (81, 82) which join at an internal common bore adjacent a separating wall (84), the wall defining a secondary seat (88) of the multiport valve. Circumscribing the common bore is an annular flange. A second fitting may be a similar "T" fitting or an "L" fitting. The "L" fitting contains a single passageway which terminates at an internal bore circumscribed by an annular flange. In use, the butterfly valve is removably positioned in sealing engagement between two fittings, with the flanges releasably attached and the inner diameters of the flanges co-extensive with the butterfly valve bore. |
