| 摘要 |
PURPOSE: A drainage fitting is provided to control the noise caused by draining and to reduce the impact added to objects of installation. CONSTITUTION: The drainage fitting comprises soundproofing grooves(110) formed continuously from the outer lower end of a cylindrical body opened upward and downward, an airtight ring(120) coupled to the soundproofing groove(110) to isolate an air layer of the soundproofing groove from the outside, a stopper formed in the body to reduce the falling speed of discharges, a buffer pad(140) installed on the body and provided with an air layer(145) to prevent noise, and two flanges(150) projected to the upper side of the body and provided with fitting holes(155) to fix drainage fittings to the ground.
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