VALVE FOR LIQUID Russian patent published in 1998 - IPC

FIELD: sanitary engineering; WC flush tank. SUBSTANCE: valve has siphon drain and drive member 3. Siphon drain is made in form of outer sleeve 4 whose bottom is connected with drive member 3 and open end is directed towards drain pipe 2. Mounted in outer sleeve 4 at clearance over perimeter is bush 5 projecting from its open end. Bush 5 is made in form of two coaxial cylindrical ferrules interconnected in upper portion forming circular chamber. Mounted coaxially in drain pipe on bottom of tank is inner cylindrical sleeve 6 having central hole in its bottom for connection of sleeve with drain pipe. Open end of inner sleeve 6 is directed to outer sleeve 4 and its lateral wall is located in circular chamber of bush. EFFECT: enhanced reliability. 5 cl, 4 dwg