Abstract: A macerator pump apparatus (MPA) includes a waste valve assembly (WVA), a macerator assembly, a pumping assembly, and a quick disconnect discharge assembly (QDDA). An inlet port of the WVA receives waste matter from a waste holding tank (WHT). A valve member positioned within the WVA directs flow of the waste matter to the macerator assembly and isolates the waste matter within the WHT by closing the valve member before the MPA is disassembled for maintenance. The macerator assembly macerates the waste matter and transfers the macerated waste matter to the pumping assembly and to a discharge port of the QDDA. A quick disconnect member detachably connects an outlet plumbing pipe to the discharge port via a quick disconnect valve (QDV) for discharging the macerated waste matter. The QDV isolates the macerated waste matter within the outlet plumbing pipe by closing the QDV before the MPA is disassembled for maintenance.

Abstract: A manual toilet flushing apparatus including an integral inlet fresh water valve assembly (IIFWVA) and a waste water discharge pump assembly (WWDPA) operably isolated from the IIFWVA is provided to preclude waste water from contaminating pressurized fresh water (PFW). The IIFWVA includes a pressurized fresh water inlet port to receive the PFW, an inlet valve body defining an inlet valve cavity (IVC), a second plunger in communication with a first plunger to actuate a check valve to direct a flow of the PFW into the IVC, and an outlet port. The PFW flows through the outlet port to a rim of a toilet bowl. The WWDPA includes a waste water inlet port to receive waste water, a discharge pump body, and a connecting rod in communication with a retractable handle to actuate a piston in backward and forward directions to suction and discharge the waste water through a discharge port.

Abstract: A manual toilet flushing apparatus including an integral inlet fresh water valve assembly (IIFWVA) and a waste water discharge pump assembly (WWDPA) operably isolated from the IIFWVA is provided to preclude waste water from contaminating pressurized fresh water (PFW). The IIFWVA includes a pressurized fresh water inlet port to receive the PFW, an inlet valve body defining an inlet valve cavity (IVC), a second plunger in communication with a first plunger to actuate a check valve to direct a flow of the PFW into the IVC, and an outlet port. The PFW flows through the outlet port to a rim of a toilet bowl. The WWDPA includes a waste water inlet port to receive waste water, a discharge pump body, and a connecting rod in communication with a retractable handle to actuate a piston in backward and forward directions to suction and discharge the waste water through a discharge port.

Abstract: A macerator pump apparatus (MPA) includes a waste valve assembly (WVA), a macerator assembly, a pumping assembly, and a quick disconnect discharge assembly (QDDA). An inlet port of the WVA receives waste matter from a waste holding tank (WHT). A valve member positioned within the WVA directs flow of the waste matter to the macerator assembly and isolates the waste matter within the WHT by closing the valve member before the MPA is disassembled for maintenance. The macerator assembly macerates the waste matter and transfers the macerated waste matter to the pumping assembly and to a discharge port of the QDDA. A quick disconnect member detachably connects an outlet plumbing pipe to the discharge port via a quick disconnect valve (QDV) for discharging the macerated waste matter. The QDV isolates the macerated waste matter within the outlet plumbing pipe by closing the QDV before the MPA is disassembled for maintenance.

Abstract: An apparatus is provided for selecting either potable water or seawater as flush water for marine sanitary toilets. The apparatus may be designed to be electrically or manually operated. Check valves and vaccum breaker prevent contamination or waste of the potable water supply.