The invention concerns a delivery valve for the delivery of a fluid into a tank of a motor vehicle. According to the invention, the following is provided: a) the delivery valve has a first settable maximum volume flow, b) the delivery valve has a second settable maximum volume flow which is higher than the first settable maximum volume flow, c) a control device (24, 25), by means of which optionally the first or the second maximum volume flow can be set, d) a sensor device (20, 21), which is configured for interaction with a signal emitter (29) assigned to the tank of the motor vehicle and which activates the control device.

An electromechanically operated fuel nozzle having continuously adjustable flow rate settings between a closed position and maximum flow. The fuel nozzle includes a fuel dispensing pipe for dispensing fuel; an electromechanical valve device to control a flow of fuel in the fuel dispensing pipe, comprising an inlet pipe and an outlet pipe. The electromechanical valve device comprises at least one continuously variable flow electromechanical valve to control the flow of fuel; an electronic board for operating the at least one continuously variable flow electromechanical valve; and electric accumulator means for electrically powering the at least one variable flow electromechanical valve and the electronic board such that the predetermined portions provide the particular one of the flow rate settings. The electromechanical valve preferably comprises a servomotor controlled ball valve.

An electromechanically operated fuel nozzle having at least four flow rate settings including maximum flow, minimum flow, and a plurality of intermediate flows. The fuel nozzle includes a plurality of solenoid valves, each configured to, upon actuation, permit a predetermined portion of the maximum flow through a fuel-dispensing pipe. The fuel nozzle also includes an electronic board configured to, in response to input indicating selection of a particular one of the flow rate settings, selectively actuate one or more of the solenoid valves such that the predetermined portions provide the particular one of the flow rate settings.

An electromechanically operated fuel nozzle having at least four flow rate settings including maximum flow, minimum flow, and a plurality of intermediate flows. The fuel nozzle includes a plurality of solenoid valves, each configured to, upon actuation, permit a predetermined portion of the maximum flow through a fuel-dispensing pipe. The fuel nozzle also includes an electronic board configured to, in response to input indicating selection of a particular one of the flow rate settings, selectively actuate one or more of the solenoid valves such that the predetermined portions provide the particular one of the flow rate settings.

A refueling system for supplying fuel to at least one piece of fracturing equipment. The refueling system can have a main fuel source and at least one pressurization unit. The pressurization unit can have an optional pump, a motor, a motor fuel source, a supply coupling device and a return coupling device. The refueling system can have sensors in the one or more supply fuel lines and in the one or more return fuel lines for receiving flow rate information and pressure information, wherein the flow rate information and pressure information are compared to preset limits and a message can be transmitted when the flow rate information and pressure information falls below or exceeds the preset limits to adjust rates of operation.

A refueling system for supplying fuel to at least one piece of fracturing equipment. The refueling system can have a main fuel source and at least one pressurization unit. The pressurization unit can have an optional pump, a motor, a motor fuel source, a supply coupling device and a return coupling device. The refueling system can have sensors in the one or more supply fuel lines and in the one or more return fuel lines for receiving flow rate information and pressure information, wherein the flow rate information and pressure information are compared to preset limits and a message can be transmitted when the flow rate information and pressure information falls below or exceeds the preset limits to adjust rates of operation.

A system for delivering a fluid to a fluid consuming asset having a fluid tank is disclosed. An inlet of a manifold is fluidically coupled to a storage tank that contains the fluid to be delivered. A first distal end of a fluid transporting mechanism is fluidically coupled to an outlet of the manifold. A second distal end of the fluid transporting mechanism is fluidically coupled to the fluid tank. A primary valve is fluidically coupled to the fluid transporting mechanism and restricts fluid flow to the fluid tank when fluid level in the fluid tank reaches a first fluid level threshold. A secondary valve is fluidically coupled to the fluid transporting mechanism and restricts fluid flow to the fluid tank when fluid level in the fluid tank reaches a second fluid level threshold. The first fluid level threshold is lower than the second fluid level threshold.

A system for delivering a fluid to a fluid consuming asset having a fluid tank is disclosed. An inlet of a manifold is fluidically coupled to a storage tank that contains the fluid to be delivered. A first distal end of a fluid transporting mechanism is fluidically coupled to an outlet of the manifold. A second distal end of the fluid transporting mechanism is fluidically coupled to the fluid tank. A primary valve is fluidically coupled to the fluid transporting mechanism and restricts fluid flow to the fluid tank when fluid level in the fluid tank reaches a first fluid level threshold. A secondary valve is fluidically coupled to the fluid transporting mechanism and restricts fluid flow to the fluid tank when fluid level in the fluid tank reaches a second fluid level threshold. The first fluid level threshold is lower than the second fluid level threshold.

A fluid dispensing nozzle including a nozzle body having a fluid path and a suction path therein. The nozzle includes a suction generator configured to generate a suction force in the suction path when fluid to be dispensed flows through the fluid path. The nozzle further includes a shut-off device having a suction chamber fluidly coupled to the suction path. The shut-off device is configured such that when the suction path is blocked during fluid dispensing the shut-off device prevents the nozzle from dispensing fluid through the fluid path. The suction chamber includes a lip extending around a perimeter thereof. An opening is formed in or extends through the lip, the opening providing fluid communication between the suction chamber and the suction path to enable liquid to flow from the suction chamber to the suction path.

A fluid dispensing nozzle including a nozzle body having a fluid path and a suction path therein. The nozzle includes a suction generator configured to generate a suction force in the suction path when fluid to be dispensed flows through the fluid path. The nozzle further includes a shut-off device having a suction chamber fluidly coupled to the suction path. The shut-off device is configured such that when the suction path is blocked during fluid dispensing the shut-off device prevents the nozzle from dispensing fluid through the fluid path. The suction chamber includes a lip extending around a perimeter thereof. An opening is formed in or extends through the lip, the opening providing fluid communication between the suction chamber and the suction path to enable liquid to flow from the suction chamber to the suction path.