A water supply mechanism includes a switching part that executes switching between water supply and water shut-off, a manual operation valve on the switching part that is capable of a manual operation thereof, and a pushing member that pushes the manual operation valve to provide a valve-closed state. The manual operation valve is pulled in a direction opposite to a pushing direction of the pushing member to provide a valve-opened state. The manual operation valve includes a plunger, an external cylinder member that encloses the plunger, a first engaging point in the external cylinder member, and a fixation part in the external cylinder member that fixes the plunger in the valve-closed state or the valve-opened state. The plunger moves beyond the first engaging point as the manual operation valve is pulled, and is fixed in the valve-opened state as a pull of the manual operation valve is released.

A water supply mechanism includes a switching part that executes switching between water supply and water shut-off, a manual operation valve on the switching part that is capable of a manual operation thereof, and a pushing member that pushes the manual operation valve to provide a valve-closed state. The manual operation valve is pulled in a direction opposite to a pushing direction of the pushing member to provide a valve-opened state. The manual operation valve includes a plunger, an external cylinder member that encloses the plunger, a first engaging point in the external cylinder member, and a fixation part in the external cylinder member that fixes the plunger in the valve-closed state or the valve-opened state. The plunger moves beyond the first engaging point as the manual operation valve is pulled, and is fixed in the valve-opened state as a pull of the manual operation valve is released.

The present invention provides an improvement for toilet fixtures that reduces the amount of wastewater that splashes out of a toilet during its use. This reduction in splashing reduces the odor and unsanitary conditions that frequently occur on and around a toilet. Advantageously, the invention allows a user to temporarily change an existing fixture to function similarly to a urinal and then return the fixture to its function as a toilet for both liquid and solid waste removal.

The present invention provides an improvement for toilet fixtures that reduces the amount of wastewater that splashes out of a toilet during its use. This reduction in splashing reduces the odor and unsanitary conditions that frequently occur on and around a toilet. Advantageously, the invention allows a user to temporarily change an existing fixture to function similarly to a urinal and then return the fixture to its function as a toilet for both liquid and solid waste removal.

Embodiments of the invention described herein thus provide improved flush valves that are designed with improved venting features and improved inlet designs. The described venting features and inlet designs, either alone or in combination, can help prevent ingestion of waste into the interior of the valve.

Embodiments of the invention described herein thus provide improved flush valves that are designed with improved venting features and improved inlet designs. The described venting features and inlet designs, either alone or in combination, can help prevent ingestion of waste into the interior of the valve.

A side-opening sleeve valve having an inner cylindrical barrel with a shaped opening through the wall, an outer cylindrical barrel having shaped opening through the wall, where the barrels are co-annular and rotatable, and a means for rotating the inner barrel relative to the outer barrel between a first open position where the shaped openings overlap to form a side opening into the sleeve valve, and a second closed position where the shaped openings do not overlap. A side-opening valve is used in pigging fluid flush system for a water-less toilet, where a toilet bowl empties into the side opening of the side-opening valve when opened. When the side-opening valve is closed, a pig cleaning system pushes the waste in the side-opening valve to a sewage system.

A side-opening sleeve valve having an inner cylindrical barrel with a shaped opening through the wall, an outer cylindrical barrel having shaped opening through the wall, where the barrels are co-annular and rotatable, and a means for rotating the inner barrel relative to the outer barrel between a first open position where the shaped openings overlap to form a side opening into the sleeve valve, and a second closed position where the shaped openings do not overlap. A side-opening valve is used in pigging fluid flush system for a water-less toilet, where a toilet bowl empties into the side opening of the side-opening valve when opened. When the side-opening valve is closed, a pig cleaning system pushes the waste in the side-opening valve to a sewage system.

An example vacuum-assisted toilet includes a toilet bowl including an outlet. The outlet of the toilet bowl is fluidly coupled to a first flush valve, for example, using a first pipe. The first flush valve is fluidly coupled to a second flush valve that is positioned downstream from the first flush valve. For example, the first flush valve may be fluidly coupled to the second flush valve using a second pipe. The second flush valve is fluidly coupled to a vacuum source. The vacuum source may include, for example, a holding tank having a vacuum pressure therein, a vacuum pump, or any other suitable vacuum source.

An example vacuum-assisted toilet includes a toilet bowl including an outlet. The outlet of the toilet bowl is fluidly coupled to a first flush valve, for example, using a first pipe. The first flush valve is fluidly coupled to a second flush valve that is positioned downstream from the first flush valve. For example, the first flush valve may be fluidly coupled to the second flush valve using a second pipe. The second flush valve is fluidly coupled to a vacuum source. The vacuum source may include, for example, a holding tank having a vacuum pressure therein, a vacuum pump, or any other suitable vacuum source.