Special constructions of flushing devices , {e.g. closed flushing system} operated mechanically or hydraulically {(or pneumatically) also details such as push buttons, levers and pull-card therefor} directly by the hand
Special constructions of flushing devices , {e.g. closed flushing system} operated mechanically or hydraulically {(or pneumatically) also details such as push buttons, levers and pull-card therefor} directly by the hand