An apparatus for replacing coolant includes a communication unit, a pressure gauge, a flexible tube, a conical plug, a valve and a vacuum producer. The communication unit includes a first port, a second port and a third port in communication with one another. The pressure gauge is connected to the third port. The flexible tube is connected to the first port. The conical plug includes a liquid channel extending throughout the conical plug. The liquid channel is connected to the flexible tube. The valve includes a switch and a pneumatic quick coupling device. The switch is connected to the second port to selectively allow or stop communication of the pneumatic quick coupling device with the second port. The vacuum producer includes a pump and a hollow insert extending from the pump. The hollow insert is adapted for connection to the pneumatic quick coupling device so that the pump is operable to produce vacuum in the valve.

The disclosure relates to a liquid refilling system (10) having a parent device (201) and a child or portable travel device sized device (101) that can be releasably coupled to the parent device (201) to transfer liquid from the parent to the child device. The parent device has a pump (207), an actuator (217) and an actuator stroke limitation means (218) whereby the amount of liquid dispensed by the parent device (201) can be selected as a single use predetermined amount or as a child refill amount. The parent pump is in liquid communication with the parent liquid reservoir and the pump has a volume which is substantially equal to the volume of the child.

A kit comprising a refill bottle comprising a refill body, a dispensing mechanism and a refill mechanism; a master bottle provided with a liquid reservoir, and comprising a master body, a pump for dispensing the liquid from the reservoir, and a stem fluidly connected to the pump and outwardly protruding from the master body; and an engaging widget configured to allow stable docking of the refill bottle with the master bottle. The stem is positioned within the engaging widget, and the kit is configured to allow a docked refill bottle to be filled with liquid from the reservoir.

Disclosed is a manually operated dual-action suction/delivery fluid pump and component assembly thereof. The dual-action fluid pump has a fluid container, a cover, a pump unit, and a control valve, wherein the fluid container serves as a reservoir for containing fluid connected to a fluid-conducting pipe. The cover is removably attached to the fluid container connecting the pump unit having a cylinder chamber with a piston. The control valve is horizontally positioned on the cover. By manipulating the control valve to reciprocate, it can be actuated to either draw air out of the fluid container or pump air into the fluid container, facilitating the fluid to enter the fluid container via the fluid-conducting pipe or pump it out of the fluid container.

Exemplary embodiments of dispensers are disclosed herein. One exemplary dispenser is a soap or sanitizer dispenser. The dispenser includes a housing. A removable and replaceable concentrate container for holding concentrated soap or sanitizer is located within the housing. A concentrate pump is in fluid communication with the concentrate container. A diluent container for holding a liquid is also located within the housing and a diluent pump for pumping the diluent is also included. The dispenser includes a mixing chamber in fluid communication with the concentrate pump and the diluent pump. The dispenser includes an outlet. When concentrated soap or sanitizer is pumped from the concentrate container, it mixes with diluent pumped from the diluent container to form a diluted mixture. The diluted mixture is dispensed at the outlet of the dispenser.

Disclosed is a manually operated dual-action suction/delivery fluid pump and component assembly thereof. The dual-action fluid pump has a fluid container, a cover, a pump unit, and a control valve, wherein the fluid container serves as a reservoir for containing fluid connected to a fluid-conducting pipe. The cover is removably attached to the fluid container connecting the pump unit having a cylinder chamber with a piston. The control valve is horizontally positioned on the cover. By manipulating the control valve to reciprocate, it can be actuated to either draw air out of the fluid container or pump air into the fluid container, facilitating the fluid to enter the fluid container via the fluid-conducting pipe or pump it out of the fluid container.