Toto Ltd.

Tsutomu Kido

Yukinori Kubozono

Haruki Matsuda

Hisashi Koga

Haruo Tsutsui

Masamichi Suematsu

Shinji Agarie

A water discharge valve device includes: a water discharge valve unit which has a valve element for opening and closing a discharge port and a control casing for controlling an up-down movement of the valve element; a casing module which includes a peripheral wall extending upwardly from a bottom wall of a water storage tank while surrounding peripheries of the discharge port and the control casing of the water discharge valve unit, to define an upwardly open space therebetween, an opening formed to penetrate through the peripheral wall, and a switching valve attached to the peripheral wall and adapted to open and close the opening; and a communication port formed in a peripheral plane extending from the control casing of the water discharge valve unit to the discharge port, to provide fluid communication between the casing module and the discharge port.

Water discharge valve device and flush water tank device with same

A discharge valve apparatus has control cylinder members for controlling the flow of rinse water flowing out from a reservoir tank discharge port, on which opening portions are formed, and flow-adjusting members attached to these control cylinder members are capable of adjusting the opening surface area of opening portions in the control cylinder member. Female engaging portions in the control cylinder member are arrayed approximately vertically, and are furnished with registration indentations for registering the attachment positions of adjusting members relative to the control cylinder members. Intervals within the registration indentations are set to be smaller than a width of an installer's finger to prevent release of engagement by an installer when the adjusting member male engaging portions are in a state of engagement with the female engaging portions of the control cylinder members.

Discharge valve apparatus and rinse water tank apparatus fitted therewith

Disclosed is a vacuum breaker having further enhanced reliability. The vacuum breaker comprises: a main body having a water inlet (), a water outlet (), a water passage () for fluidically connecting the water inlet and the water outlet, and a first ambient-air intake port () and a second ambient-air intake port () for allowing the water passage to fluidically communicate with ambient air therethrough; a first valve element (); and a second valve element () disposed downstream of the first valve element. The first valve element is designed to be movable between a first position allowing the water inlet to fluidically communicate with a zone of the water passage between the first and second valve elements, when water is permitted to pass through the water passage, and a second position allowing the first ambient-air intake port to fluidically communicate with the zone of the water passage between the first and second valve elements, when water is inhibited from passing through the water passage. The second valve element is designed to be movable between a first position allowing the zone of the water passage between the first and second valve elements to fluidically communicate with the water outlet, when water is permitted to pass through the water passage, and a second position allowing the second ambient-air intake port to fluidically communicate with the water outlet, when water is inhibited from passing through the water passage.

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Fukuoka, Japan

Tsutomu Kido