LAVATORY SYSTEM FOR USE IN POTENTIALLY VANDALIZED AREAS

摘要

LAVATORY SYSTEM FOR USE INPOTENTIALLY VANDALIZED AREASABSTRACT OF THE DISCLOSUREA wall-mounted lavatory system is disclosed havingtwo remote actuating units on the front surface of a lava-tory sink connected to two self-closing flush valve mech-anisms located behind the wall so that the flush valvesare not accessible to the user of the lavatory sink. Thelavatory system can employ either mechanical actuating meansor hydraulic actuating means. Whichever actuating meansare employed, the same basic flush valve can be used. Theflush valve includes a piston assembly that normally closesupon a main valve seat, the piston assembly including arelief valve assembly normally closing upon a relief valveseat, the relief valve assembly having a bell-shaped reliefvalve head which threadedly engages a stem, the length ofthe stem depending from the relief valve head being adjust-able by the extent to which the stem is screwed into therelief valve head.