A flush toilet of the present invention includes: a bowl including a waste receiving surface, a rim and a shelf surface formed between the waste receiving surface and the rim, the shelf surface of the bowl including linear portions provided on a right side and a left side, a front arc portion connected to front ends of the linear portions, and a rear arc portion connected to rear ends of the linear portions; a rim spout portion spouting flush water from a rim spout port to the shelf surface to form a circulating flow; and the like. Flush water is spouted backward from the rim spout port along the linear portions of the shelf surface; and the shelf surface located on an upstream side of the rim spout port has a sloped surface ascending toward the rim spout port.

A tankless toilet system includes a tankless toilet and a sensor. The tankless toilet is configured to receive water from a water source. The tankless toilet includes a bowl, a first supply conduit, a rim jet, a sump, a second supply conduit, and a sump. The first supply conduit is configured to receive the water from the water source. The rim jet is fluidly coupled to the first supply conduit and configured to provide the water to the bowl. The sump is configured to receive the water from the bowl. The second supply conduit is configured to receive the water from the water source separate from the first supply conduit. The sump jet is fluidly coupled to the second supply conduit and configured to provide the water to the sump. The sensor is coupled to the tankless toilet.

A flush toilet resting over a floor and comprising: a toilet bowl; a first water conduit comprising a first conduit—first end and a first conduit—second end; a second water conduit, comprising a second conduit—first end and a second conduit—second end, and; at least one water pump, the at least one pump water-powered and not electrically powered; wherein: the first conduit—first end is operationally connectable to an external water pipe comprising pressurized water; the first conduit—second end is positioned to allow providing the pressurized water to the water pump; the second conduit—first end is operationally connected to receive water from the water pump; wherein the water pump is positioned proximal to the bowl and between the bowl and the floor, and wherein the toilet is configured such that action of water on the at least one pump allows the flush of at least 6 liters per second.

A system for monitoring flush valves includes a plurality of flush valves arranged in at least one restroom, each flush valve including a communication device configured to transmit flush valve data, and at least one controller arranged in a first flush valve and in communication with each other flush valve. The at least one controller is configured to determine a static pressure within the first flush valve, detect a second pressure within the first flush valve, determine that the second pressure is less than the static pressure, in response to determining that the second pressure is less than the static pressure, compare the second pressure with at least one other pressure associated with at least one other flush valve, and determine that the first flush valve is in need of servicing or replacement based on comparing the second pressure with the at least one other pressure.

In a sanitary valve (1) having a push-push actuation mechanism (2), a cap interface (5) is provided between a cover cap (6) and an actuating element (3) having a higher rotational symmetry than a fitting interface (8) between the valve (1) and a fitting (9).

Disclosed herein is actuation apparatus. The actuation apparatus comprises a diaphragm valve, having an upstream side and a downstream side, opposite the upstream side. The actuation apparatus also comprises a hydraulic actuator, fluidically coupled with the downstream side of the diaphragm valve by a first hydraulic line. The actuation apparatus further comprises a valve fluidically coupled with the upstream side of the diaphragm valve by a second hydraulic line. The actuation apparatus additionally comprises a valve controller coupled with the valve and operable to open and close the valve. Pressurized fluid from the downstream side of the diaphragm valve flows to the hydraulic actuator, via the first hydraulic line, in response to opening of the valve. The hydraulic actuator is configured to actuate in response to receipt of pressurized fluid from the downstream side of the diaphragm valve.

A toilet includes a bowl with a sump and a trapway connecting the sump to an outlet of the toilet. The trapway has a zeta shape and is configured to induce a siphon which provides pressure to suction waste water from the bowl during a flush cycle. A trapway supply conduit is connected to the trapway in a tangential orientation to an upleg region of the trapway. The trapway supply conduit supplies water to the trapway, which follows a contour of the inner surface of the trapway supply conduit and continues in the same direction into the upleg region of the trapway by relying on a fluid flow to follow the curve of a convex surface placed proximate to the flow.

A toilet includes a bowl with a sump and a trapway connecting the sump to an outlet of the toilet. The trapway has a zeta shape and is configured to induce a siphon which provides pressure to suction waste water from the bowl during a flush cycle. A trapway supply conduit is connected to the trapway in a tangential orientation to an upleg region of the trapway. The trapway supply conduit supplies water to the trapway, which follows a contour of the inner surface of the trapway supply conduit and continues in the same direction into the upleg region of the trapway by relying on a fluid flow to follow the curve of a convex surface placed proximate to the flow.

A tankless toilet includes a bowl, a trapway, and a jet. The bowl includes a rim at an upper portion of the bowl and a sump at a lower portion of the bowl. The trapway extends from the sump to a drain. The jet includes a main channel configured to receive a supply of water from a supply conduit, and a plurality of distribution channels configured to introduce water received from the main channel to at least one of the sump and the trapway. The jet is configured to receive the supply of water from the supply conduit at a first flow rate and induce a flow from the supply of water into the trapway at a second flow rate greater than the first flow rate to prime a siphon within the trapway. The second flow rate is greater than the first flow rate prior to priming the siphon.

A tankless toilet includes a bowl, a trapway, and a jet. The bowl includes a rim at an upper portion of the bowl and a sump at a lower portion of the bowl. The trapway extends from the sump to a drain. The jet includes a main channel configured to receive a supply of water from a supply conduit, and a plurality of distribution channels configured to introduce water received from the main channel to at least one of the sump and the trapway. The jet is configured to receive the supply of water from the supply conduit at a first flow rate and induce a flow from the supply of water into the trapway at a second flow rate greater than the first flow rate to prime a siphon within the trapway. The second flow rate is greater than the first flow rate prior to priming the siphon.