| 摘要 |
PURPOSE: A pressing wheel assembly for connecting water supply and drainage pipes is provided to maintain safe water-tightness by coupling fixing uneven portions and separation preventing rings and preventing bolt from being released by pressure or water pressure. CONSTITUTION: A pressing wheel assembly for connecting water supply and drainage pipes comprises a head(20), inner and outer pressing wheels(30,40), and a square joining bolt(50). A reinforcing steel piece(55) is coupled with the head part of the bolt through a coupling space of a head. A bolt combining groove of the inner pressing wheel is coupled with the square joining bolt. The outer pressing wheel has a bolt coupling hole and a fixed uneven portion(43). A separation preventing ring(53) and a nut(54) are coupled with the square joining bolt.
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