A fluid exchanger may exchange a fluid (e.g., coolant) in a reservoir (e.g., vehicle radiator) by removing or withdrawing a first fluid (e.g., old, spent, used, etc.) and by introducing a second fluid (e.g., new, clean, etc.). For example, the fluid exchanger may use a negative pressure, suction, or vacuum to draw the first fluid from the reservoir, and subsequently, the second fluid may be transferred into the reservoir using a negative pressure held in the reservoir, a positive pressure applied to the second fluid, or a combination thereof. The fluid exchanger may also include a multi-purpose, hand-held nozzle that can change an operation of the fluid exchanger from a withdrawing mode to a dispensing mode.

A dispensing fitment assembly includes a fitment assembly and a dispensing probe. The fitment assembly includes a fitment housing and a plug. The fitment housing is configured to operatively couple to a container opening of a fluid container. The plug is positioned within an interior portion of the fitment housing. The plug is slidingly movable between an open and closed position. Engagement between the dispensing probe and the interior surface of the plug is configured to move the plug from the closed position to the open position. Disengagement between the dispensing probe and the interior surface of the plug is configured to move the plug from the open to closed position.

A fluid injection device for vehicle radiator includes a main body. The main body includes a negative pressure device, a container, an injection opening, and a switching mechanism. The injection opening is adapted for connecting with an opening of a radiator of a vehicle. The negative pressure device and the container communicate the injection opening respectively.

A consistent water to chemical ratio in each of two described operating modes is achieved by implementing a closed loop insert comprising a single straw with a dual dilution rate. The closed loop insert is installed at the packaging level and is recessed into the neck of the container so that it does not interfere with the bottle cap or the dispensing unit to which it might be attached. The closed loop engages with a mating cap adapter or chemical dispenser that keys up to a closed insert to allow the dilution dispenser to draw chemical out of the container through the use of a vacuum pressure. The dual dilution rate closed loop insert of the invention has two different metering tip sizes that fit inside a single straw closed loop insert, selected based upon operating modes.

A fluid injection device for vehicle radiator includes a main body. The main body includes a negative pressure device, a container, an injection opening, and a switching mechanism. The injection opening is adapted for connecting with an opening of a radiator of a vehicle. The negative pressure device and the container communicate the injection opening respectively.

A pump capable of dispensing both a large volume and a small volume of colorant comprises a large reciprocating positive displacement pump having a large reciprocating part, a large pump body and a large pump inlet-outlet opening, characterized in that: a small reciprocating part fixed to the large reciprocating part is disposed in the large pump body; a small pump body is disposed on a base of the large pump body, and provided with a small pump inlet-outlet opening; and the small reciprocating part, the small pump body and the small pump inlet-outlet opening constitute a small reciprocating positive displacement pump.

Method for refilling a container (26) with a dispensing pump assembled on its neck (7), comprising the following steps: [1] positioning the container (26) upside right, and fluidically connecting the interior of a refilling cartridge (30) with a refilling liquid with an air passage (22) present in the pump and that communicates the inner volume (8) of the container with the exterior in a specific position of the piston (11) of the pump, [2] moving the piston until a fluidic communication is established between the interior of the refilling cartridge and the inner volume (8) through the air passage, [3] increasing the pressure to which the liquid in the interior of the refilling cartridge is subjected, thereby causing the passage of part of the liquid to the inner volume, thereby increasing the pressure in the inner volume, [4] reducing the pressure in the interior of the refilling cartridge to a value less than the pressure in the inner volume, thereby allowing air to pass from the inner volume to the interior of the refilling cartridge through the air passage, [5] repeating steps [3] and [4] at least once, [6] disconnecting the refilling cartridge.

A personal vaporizer having a pressure-induced liquid supply that allows a user to draw liquid from a liquid reservoir through applying a suction force on the mouthpiece. The amount of liquid drawn is proportional to the pressure induced, and proportional to the amount of vaporization a user may desire.

An assembly for dispensing fluid products, comprising a housing (44) having a dispense opening (40) and a mount (42) for a container (12) that contains the fluid product, pumping means (45), a diverting element (53) rotatable around a rotation axis (R) provided with a first channel (A) and a second channel (B), which are in fluid communication with one another and each have an open end (66) arranged radially with respect to the rotation axis (R) on a peripheral surface (65) of the rotatable diverting element (53). The assembly further comprises a suction conduit (49) connected to an inlet of the pumping means (45) for withdrawing fluid product from said container (12) installed on the mount (42), a delivery conduit (50) fluidly connecting an outlet of the pumping means (45) and said rotatable diverting element (53), and a recirculation conduit (52) arranged downstream of the diverting element (53) for returning fluid product to the container (12). The rotatable diverting element (53) has at least one recirculation position (O) in which the open end (66) of one of the channels faces the open and of the delivery conduit (50) to be in fluid communication with the latter and the open end (66) of the other channel faces the recirculation conduit (52) to be in fluid communication with the latter so as to recirculate the fluid product to the container (12); and at least a delivery position (I), in which the open end (66) of one of the channels faces an open end of the delivery conduit (50), to be in fluid communication with the latter, and the open end (66) of the other channel faces the dispense opening (40) for dispensing the fluid product.

A container insert is disclosed for use in a closed loop dispensing system. The insert is press-fitted into the throat of a liquid container. The insert includes a plastic retainer having a plastic spring over-molded thereon. The plastic spring replaces the prior art metal spring. The container insert is completely recyclable and is automatically self-venting.