Disclosed herein are embodiments of liquid dispensing container preferably configured as portable, handheld liquid dispensing containers. These liquid dispensing containers possesses a vent structure that provides improved liquid dispensing along with simplified vent construction and container integration. In these regards, these liquid dispensing containers advantageously overcome one or more shortcomings associated conventional liquid dispensing containers and other types of containers.

A follower plate is configured for closing off a container for viscous material, which container is open toward the top, has a container bottom and a container wall that extends upward from the container bottom, which plate can be moved in the direction toward the container bottom, lying against an inner surface of the container wall, which surface faces the container interior, and which plate has a plate body in which a material outlet is arranged for conveying the viscous material out of the container, and at least one ventilation opening is arranged for conducting air out of the container. A valve seat of a ventilation valve, firmly connected to the plate body, is arranged in each ventilation opening.

A flow-through pressure-vacuum valve includes a valve body having a tank-side opening and a vent-side opening. A pressure relief valve (e.g., a ball held in a corresponding seat by gravity) is positioned within a first passageway through the body. The ball is moved from the first valve seat to open the first passageway when pressure at the tank-side opening exceeds pressure at the vent-side opening by a predetermined pressure differential. A vacuum relief valve is positioned within another passageway (e.g., a serpentine passageway). The vacuum relief valve (e.g., also a ball held in a corresponding seat by gravity) is positioned within the serpentine passageway. Analogously, the ball is moved from the valve seat to open the serpentine passageway when pressure at the tank-side opening is less than the pressure at the vent-side opening by a predetermined pressure differential.

Exemplary sanitary soap refilling systems and methods are disclosed herein. An exemplary refill refilling system includes a housing, a pump located within the housing, and a bulk storage tank connector. The bulk storage tank connector having a liquid outlet and an air inlet. A liquid inlet conduit is in fluid communication with the pump the liquid outlet. A refill connector is included. The refill connector has a liquid inlet and an air outlet. The refill connector air outlet and the bulk storage tank connector air inlet are in fluid communication with one another. The refill liquid inlet is in fluid communication with the pump.

An apparatus, including a monitor system which includes a microphone, a first power supply, and a transmitter which transmits a first audible sound, indicative of a normal flow of fluid into a tank, or transmits a second audible sound, indicative of a need to cease a flow of the fluid into the tank; an attachment device to which the monitor system or the microphone is attached and which is attached to a ventilation pipe or an object in a vicinity of the ventilation pipe; and a receiver system which includes a receiver, which receives the first audible sound or the second audible sound, a second power supply, and a speaker which provides a first audio output, indicative of the first audible sound, or a second audio output indicative of the second audible sound. The speaker outputs the first audio output or outputs the second audio output.

An apparatus for coupling a pressurized water supply to a recreational vehicle (RV) fresh water fill port is disclosed. The apparatus comprises a housing with a bayonet connector adapted to engage the RV fill port, a venturi tube within the housing for accelerating water flow, and a plurality of vent ports fluidly connected to the venturi tube for venting excess pressurized water. A deflection shroud extends from the housing to redirect vented water away from the user. The vent ports have a combined flow capacity greater than the maximum flow rate of the water supply, ensuring leak-free operation. The invention may include features such as radially positioned vent ports, a deflection shroud, UV-resistant polymer construction, a sealing gasket, and a textured deflection shroud surface. An alternative embodiment describes a coupling device for transferring pressurized water to a gravity-filled tank, incorporating a passive overpressure prevention system.

An apparatus for coupling a pressurized water supply to a recreational vehicle (RV) fresh water fill port is disclosed. The apparatus comprises a housing with a bayonet connector adapted to engage the RV fill port, a venturi tube within the housing for accelerating water flow, and a plurality of vent ports fluidly connected to the venturi tube for venting excess pressurized water. A deflection shroud extends from the housing to redirect vented water away from the user. The vent ports have a combined flow capacity greater than the maximum flow rate of the water supply, ensuring leak-free operation. The invention may include features such as radially positioned vent ports, a deflection shroud, UV-resistant polymer construction, a sealing gasket, and a textured deflection shroud surface. An alternative embodiment describes a coupling device for transferring pressurized water to a gravity-filled tank, incorporating a passive overpressure prevention system.