A portable air compressor includes a frame, a compressor unit coupled to the frame, and an air tank for storing compressed air generated by the compressor unit. The air tank is coupled to the frame. A battery compartment coupled to the frame. The battery compartment defines an opening and a battery receptacle within the opening. The portable air compressor also includes a battery pack selectively electrically connectable to the battery receptacle, an outlet port protruding from the battery compartment, a tank gauge on the battery compartment, a pressure regulator between the air tank and the outlet port for regulating the pressure of air supplied from the outlet port, an actuator on the battery compartment for adjusting the regulated pressure of air supplied from the outlet port, and a switch on the battery compartment for turning the compressor unit on and off.

A fluid-driven chemical product dispensing system dispenses fluid chemical product concentrates. The dispensing system includes a fluid drive unit powered by flow of a fluid, such as a diluent, and a pump which delivers the fluid chemical product concentrate from a supply to a destination. Upon exit from the fluid drive unit, the diluent is also delivered to the destination, where it mixes with the dispensed fluid chemical product concentrate to form a use solution. The dilution ratio of the volume of fluid chemical product concentrate dispensed per unit time versus the volume of diluent exiting the drive unit per unit time is constant over a defined range of diluent flow rates.

A dispensing pump for fuel vending systems, comprising a pump body which forms internally a pumping chamber, which rotatably accommodates an impeller, functionally connected to a motor, and provided with an intake connector and a delivery connector, which communicate with the pumping chamber and can be connected to a fuel dispensing line; the pump body has at least one coupling portion for at least one auxiliary device of the dispensing line.

A dispensing pump for fuel vending systems, comprising a pump body which forms internally a pumping chamber, which rotatably accommodates an impeller, functionally connected to a motor, and provided with an intake connector and a delivery connector, which communicate with the pumping chamber and can be connected to a fuel dispensing line; the pump body has at least one coupling portion for at least one auxiliary device of the dispensing line.

A fluid product dispenser is sized to removably receive a product package containing a supply of the fluid product. The product package includes an internally integrated fluid pump, and the dispenser includes a drive unit powered by flow of a fluid. Flow of the fluid powers the drive unit, which in turn drives the pump internal to the product package, resulting in dispensation of the fluid product in a product/fluid ratio that is independent of the fluid flow rate.

A fluid product dispenser is sized to removably receive a product package containing a supply of the fluid product. The product package includes an internally integrated fluid pump, and the dispenser includes a drive unit powered by flow of a fluid. Flow of the fluid powers the drive unit, which in turn drives the pump internal to the product package, resulting in dispensation of the fluid product in a product/fluid ratio that is independent of the fluid flow rate.

A mobile liquid transferring system comprising a first articulating fluid conduit configured to couple to a first tank, a pump comprising a pump inlet in fluid communication with the first articulating fluid conduit, a flow meter comprising a first pickoff for a first liquid of a first viscosity and a second pickoff for a second liquid of a second viscosity, a meter register configured to control flow of the first liquid and the second liquid in accordance with one or more loading parameters and one or more liquid parameters, a flow control valve in fluid communication with the flow meter and configured to alter flow of at least one of the first liquid and the second liquid in response to a communication from the load rack controller, and a second articulating fluid conduit in fluid communication with the flow control valve and configured to couple to a second tank.

A mobile liquid transferring system comprising a first articulating fluid conduit configured to couple to a first tank, a pump comprising a pump inlet in fluid communication with the first articulating fluid conduit, a flow meter comprising a first pickoff for a first liquid of a first viscosity and a second pickoff for a second liquid of a second viscosity, a meter register configured to control flow of the first liquid and the second liquid in accordance with one or more loading parameters and one or more liquid parameters, a flow control valve in fluid communication with the flow meter and configured to alter flow of at least one of the first liquid and the second liquid in response to a communication from the load rack controller, and a second articulating fluid conduit in fluid communication with the flow control valve and configured to couple to a second tank.

A system for circulating a liquid which comprises at least one pump, connectable to at least one pipe for the flow of a liquid and driven by at least one electric motor; sensors being provide for sensing at least two electrical parameters correlated with the operation of the electric motor and a processor which is functionally connected to the sensors and configured to determine, based on the signals provided by the sensors, at least one fluid-dynamic parameter correlated with the flow of the liquid through the pipe.

A system for circulating a liquid which comprises at least one pump, connectable to at least one pipe for the flow of a liquid and driven by at least one electric motor; sensors being provide for sensing at least two electrical parameters correlated with the operation of the electric motor and a processor which is functionally connected to the sensors and configured to determine, based on the signals provided by the sensors, at least one fluid-dynamic parameter correlated with the flow of the liquid through the pipe.