FIELD: valving.
SUBSTANCE: valve has housing provided with a pipe for connecting the valve with the sewer system, at least one port through which the internal space of the pipe is connected with the operation members of the valve (valve seat and valving member), cover arranged above the top part of the pipe whose top wall is at a distance from the top part of the pipe, and valving member interposed between the top part of the pipe and top wall of the cover. .
EFFECT: enhanced reliability.
18 cl, 10 dwg
