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 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. The reciprocating positive displacement pump provided in the present invention may achieve dispensing of both a large volume and a small volume of colorant by means of a large-section pump, and thus guarantees the accuracy of the dispensed volume of colorant, and in particular, the accuracy of dispensing of a small volume of colorant; and the reciprocating positive displacement pump, when compared with the prior art, has the advantages of high accuracy and simple structure, and when compared with the structure in patent No. US2009236367A1, has the advantages of good leakproofness, high utilization of a reciprocating pump cylinder body in the length direction, and improved stroke accuracy of the reciprocating pump due to less elastic deformation of a pump support.

A system for filling a tank for a firefighting helicopter with water without ground personnel, comprising a pilot controlled valve assembly to selectively permit water to flow into the refill tank upon the receipt of a communication transmitted by a communication device within the helicopter. The pilot controlled valve assembly can include a supply valve configured to move between at least a closed state and an open state, a controller configured to control the supply valve, and a receiver configured to send a signal to a controller to cause the controller to at least open the supply valve upon receipt by the receiver of a communication meeting one or more predetermined criteria. The water tank can be filled from a water source, including a municipal water source, when the supply valve is open to provide a more efficient, semi-autonomous refill tank system greatly improves costly and time-consuming manually refill systems.

Devices, systems and methods of transferring liquids or mixtures/slurries of liquids and solids between vessels having challenging and difficult configurations and locations, and over long and short distances in a continuous or near continuous discharge for storage or transport using a combination of vacuum and pressurized fluids.

A probe assembly for a closed transfer system is provided. The probe assembly includes a base having a base air inlet, a probe having a base end and a probe end, at least one primary valve positioned at the probe tip, and at least one secondary valve. The probe defines a hollow air channel extending from the base end to the probe end including a probe tip, the base end being coupled to the base such that the hollow air channel is in fluid communication with the base air inlet and the probe tip. The at least one secondary valve is positioned at the base air inlet and configured to selectively allow air into the hollow air channel.

The device for pumping products from a pumping area (2) to an enclosure (3) comprises two tanks, a transfer system (8) which generates a suction of the products from the pumping area (2) to the tanks (4A, 4B) and a transfer of the non-gaseous products from the tanks (4A, 4B) to the enclosure (3), valves (3A, 3B, 3D, 3D, 3I, 4C, 4D, 4I, 4J) to, alternately, allow or block the communication from one tank (4A, 4B) to the pumping area (2) and a communication from the other tank (4A, 4B) to the enclosure (3), and a control system (25). The transfer system (8) comprises a suction unit (13) provided with hydro-ejectors (13A, 13B) connected to each tank (4A, 4B) and generating the suction of the products and a transfer unit (20) provided with a pump connected to the tanks (4A, 4B) to transfer non-gaseous products to the enclosure (3).

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 filling method includes sealing a container against a filling element of a filling system, after the container has been sealed against the filling element and before beginning a filling phase, connecting the container to an annular vacuum duct, while the container is connected to the vacuum duct, carrying out an evacuation-and-flushing step in which the container is evacuated and flushed with flushing gas that comprises steam from an annular steam duct that carries pressurized steam, connecting the container to an annular pre-tensioning duct, pre-loading the container with inert gas from the pre-tensioning duct, filling the container with the liquid, and relieving pressure into the vacuum duct.

A probe assembly configured to selectively restrict fluid flow through an outlet of a closed transfer system. The probe assembly has an elongate probe body with a top end portion, a bottom end portion, an outer wall, and an internal structure defining a fluid chamber extending from the bottom end portion to the top end portion. The fluid chamber has a fluid chamber inlet at the bottom end portion extending through the outer wall into the fluid chamber and a fluid chamber outlet at the top end portion extending from the fluid chamber through the outer wall. A probe tip with a cylindrical bore is configured to engage the top end portion of the elongate probe body and a probe tip outlet is configured to be in fluid communication with the fluid chamber outlet. A rotating head located circumjacent to the probe tip and adjacent to the probe tip outlet is configured to rotate about the probe tip. The rotating head having an inner surface, an outer surface, and a vane extending from the inner surface through the outer surface.

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.