A cordless compressor has an air storage tank, a pump for pressuring air within the air storage tank, a motor driving pump, a power tool battery pack connected to the motor, a discharge port connected to the air storage tank, and a regulator disposed between the discharge port and the air storage tank. The pump can raise the air pressure within the air storage tank from 0 psi to about 135 psi in less than 135 seconds. With such arrangement, a compressor having an air pressure within the air storage tank of 135 psi set at a 70 psi setting can power an 18 gauge nailer connected to the compressor to drive more than 1200 nails on a single battery charge.

A method of maintaining a backpressure of a fluidic product is provided. The method includes pressurizing a first reservoir to a first predetermined pressure level using compressed air, delivering the fluidic product to the pressurized first reservoir until a current level of the fluidic product in the first reservoir reaches a first predetermined level, pressurizing a second reservoir to a second predetermined pressure level using the compressed air, delivering the fluidic product to the pressurized second reservoir until a current level of the fluidic product in the second reservoir reaches a second predetermined level, and controlling the backpressure of the fluidic product using the first reservoir and the second reservoir such that a discharge flow of the fluidic product is continuous.

A method of maintaining a backpressure of a fluidic product is provided. The method includes pressurizing a first reservoir to a first predetermined pressure level using compressed air, delivering the fluidic product to the pressurized first reservoir until a current level of the fluidic product in the first reservoir reaches a first predetermined level, pressurizing a second reservoir to a second predetermined pressure level using the compressed air, delivering the fluidic product to the pressurized second reservoir until a current level of the fluidic product in the second reservoir reaches a second predetermined level, and controlling the backpressure of the fluidic product using the first reservoir and the second reservoir such that a discharge flow of the fluidic product is continuous.

A vehicle air management system is provided. The vehicle air management system comprises an air tank and a boost air tank. Based on a signal indicative of an air consumption level of at least one air consumer, a control unit is configured to control the vehicle air management system to deliver pressurized air from the boost air tank to be supplied to an air compressor.

The pneumatic roadway energy recovery system generates power from the weight of vehicles, pedestrians and the like traveling on a roadway surface. The pneumatic roadway energy recovery system includes a plurality of pneumatic pumps in fluid communication with one another and that are arrayed beneath a roadway surface. The pneumatic pumps are in fluid communication with a storage tank. The vehicles, pedestrians and the like traveling on the roadway surface compress the plurality of pneumatic pumps as they pass over the pumps, generating pressurized air, which is received by and stored in the storage tank. Preferably, a turbine, such as a Pelton wheel or the like, is in fluid communication with the storage tank. Selective release of the pressurized air in the storage tank drives the turbine, which, in turn, is connected to an electrical generator for generating usable electrical power.

The pneumatic roadway energy recovery system generates power from the weight of vehicles, pedestrians and the like traveling on a roadway surface. The pneumatic roadway energy recovery system includes a plurality of pneumatic pumps in fluid communication with one another and that are arrayed beneath a roadway surface. The pneumatic pumps are in fluid communication with a storage tank. The vehicles, pedestrians and the like traveling on the roadway surface compress the plurality of pneumatic pumps as they pass over the pumps, generating pressurized air, which is received by and stored in the storage tank. Preferably, a turbine, such as a Pelton wheel or the like, is in fluid communication with the storage tank. Selective release of the pressurized air in the storage tank drives the turbine, which, in turn, is connected to an electrical generator for generating usable electrical power.

Devices and methods for operating a diaphragm compressor system provide high output pressure and high throughput. In some embodiments, modular diaphragm compressors are stacked with a clamping mechanism pressing the compressor modules together. In embodiments, multiple stacks are provided as stages of a pressurization process. In embodiments, a main stage valve controls one or more pressure circuits for one or more hydraulic actuators of compressor modules. In embodiments, orifices configured for damping are incorporated to control actuator piston movement within a compressor module.

A fluid recovery system comprises a vapor recovery unit, control system, vent line, main vapor recovery unit inlet line, and a discharge line. The vapor recovery unit comprises a vapor recovery vessel and a vapor recovery compressor comprising a motor. The main vapor recovery unit inlet line is fluidly connected to the vapor recovery vessel. The vent line comprises a valve adapted to regulate packing case vapor flow through the vent line to the main vapor recovery unit inlet line. In certain embodiments the fluid recovery system comprises a gas scrubber tank, or a receiver tank, or gas-actuated control components. In certain embodiment, the system recovers vent gas, blow-by gas, or liquids or other fluids. In certain embodiment, the receiver tank receives fluids entrained in packing case vents and separates the fluid into liquids and vapor.

The present disclosure relates to a dispensing device for an agricultural sprayer. The dispensing device includes a supply manifold having at least two inlets, each inlet connectable to a product source and engaging with a closing valve, and a dispensing manifold having at least two outlets, each outlet connectable to at least one spraying member and engages with a closing valve. The dispensing device further includes a control mechanism that includes at least one camshaft having a plurality of cams. Each cam controls the opening and closing of an associated valve.

An air compressor includes an air storage unit defining a first chamber and a cylinder containing a piston body. The top wall of the cylinder is formed with a tubular projection defining a bore to serve as a second pressure chamber. When the piston head of the piston body is almost in contact with the top wall of the cylinder, part of the compressed air can enter the second pressure chamber, so that the piston body can conduct reciprocation motion more smoothly. Furthermore, the cylinder has an open bottom that is divided into two halves according to a central vertical line of the cylinder, wherein one half of the open bottom is horizontal while the other half of the open bottom is slanted. When the piston body is at BDC, the piston head will be entirely within the cylinder and thus keep gas-tight with the cylinder.