Anti-syphon/stench trap for drains on sanitary units has a casing with an inlet, a ring chamber, a drain chamber, a spiral inner wall and an overflow
摘要
<p>A spiral inner wall (114) has a wall clearance from a casing (101) fitted with an inlet (102) and forms a ring chamber (105) with the casing's inner wall (113). The ring chamber maintains a link to an upper overflow (115) formed by the spiral inner wall so as to flow into a drain chamber (106) with drain connection pieces directed outwards.</p>
