In a flow rate controller and a drive device, a housing is provided therein with a first flow passage, a second flow passage adjacent to the first flow passage, a first throttle valve provided to the first flow passage, and a second throttle valve provided to the second flow passage. A pilot check valve is provided to the second flow passage and is connected in series to the second throttle valve. A pilot air flow passage communicates with a pilot port of the pilot check valve for supplying and discharging pilot air, and a third throttle valve is provided to the pilot air flow passage. In response to the pressure of the pilot air, the pilot check valve switches between a state in which the passage of exhaust air discharged from an air cylinder is permitted and a state in which passage of the exhaust air is prevented.

In a fluid circuit for an air cylinder connected to a switching valve provided with exhaust ports, a head-side pressure chamber is connected to the switching valve by a first pipe, and a rod-side pressure chamber is connected to the switching valve by a second pipe. A first restrictor is disposed at a connection point between the first pipe and the switching valve or in the vicinity of a first output port of the switching valve, and a second restrictor is disposed at a connection point between the second pipe and the switching valve or in the vicinity of a second output port of the switching valve.

In a fluid circuit for an air cylinder connected to a switching valve provided with exhaust ports, a head-side pressure chamber is connected to the switching valve by a first pipe, and a rod-side pressure chamber is connected to the switching valve by a second pipe. A first restrictor is disposed at a connection point between the first pipe and the switching valve or in the vicinity of a first output port of the switching valve, and a second restrictor is disposed at a connection point between the second pipe and the switching valve or in the vicinity of a second output port of the switching valve.

The present disclosure provides a compressed air processing system of which the operation of supplying compressed air and the regeneration operation can be efficiently controlled by an electronic control unit. In particular, the present disclosure is characterized in that the pressure of a regeneration sequence valve installed in a regeneration line is increased over a set pressure by controlling a valve, which is electronically controlled, to switch, so the opening time of the regeneration line is delayed in comparison to the opening time of an unloader valve, whereby regeneration efficiency is improved.

Disclosed are a slit valve apparatus and a method for controlling a slit valve. The slit valve apparatus includes a slit valve assembly and a servo-control system in communication with the slit valve assembly. The slit valve assembly includes at least one gate able to transition between an open position and a closed position, at least one pneumatic actuator, at least one proportional pneumatic valve including a plurality of controllers, and a continuous position sensor. The servo-control system includes a centralized controller that generates a control signal and adjusts the movement of the at least one gate based on the position trajectory for the gate, a linear position measurement of the gate from the continuous position sensor, and fluid pressure/flow measurements from the plurality of controllers.

The present disclosure provides a compressed air processing system of which the operation of supplying compressed air and the regeneration operation can be efficiently controlled by an electronic control unit. In particular, the present disclosure is characterized in that the pressure of a regeneration sequence valve installed in a regeneration line is increased over a set pressure by controlling a valve, which is electronically controlled, to switch, so the opening time of the regeneration line is delayed in comparison to the opening time of an unloader valve, whereby regeneration efficiency is improved.

A control valve in an intermittent air-generating device has a five-port valve, the inlet port of which is connected to a fluid supply source and the outlet port is connected to an air-spraying device. As a result of pilot air being supplied to a pilot input port, a valve element moves, and as a result of the inlet port and the outlet port being put in an ON state in which the two are in communication with each other, compressed air is sprayed from the air-spraying device. Meanwhile, as a result of the pilot air being discharged from the pilot input port by way of a discharge port, the valve element moves in the opposite direction and the inlet port and the outlet port are put in an OFF state in which the state of communication between the two is blocked. The ON state and OFF state alternate intermittently.

A control valve in an intermittent air-generating device has a five-port valve, the inlet port of which is connected to a fluid supply source and the outlet port is connected to an air-spraying device. As a result of pilot air being supplied to a pilot input port, a valve element moves, and as a result of the inlet port and the outlet port being put in an ON state in which the two are in communication with each other, compressed air is sprayed from the air-spraying device. Meanwhile, as a result of the pilot air being discharged from the pilot input port by way of a discharge port, the valve element moves in the opposite direction and the inlet port and the outlet port are put in an OFF state in which the state of communication between the two is blocked. The ON state and OFF state alternate intermittently.

A gas spring system (3) for a height adjustable table (1) comprises a gas spring (4) having a gas spring cylinder (6) with a gas compartment (9) provided therein, a gas spring piston (7) arranged therein and a gas spring piston rod (8) joined thereto. The gas spring system (3) further comprises a gas interface (10), connected to the gas compartment (9), which at least inserts gas from outside into the gas spring system (3), a transfer cylinder (12) having a transfer piston (13), a first transfer chamber (14) and a second transfer chamber (15) separated by the transfer piston (13), and a hydraulic pump (16). The gas comportment (9) is connected to the first transfer chamber (14) and the hydraulic pump (16) is connected to the second transfer chamber (15). The hydraulic pump (16) conveys hydraulic oil and the transfer piston (13) is moved in direction towards the first transfer chamber (14) by the hydraulic oil conveyed by the hydraulic pump (16) in order to increase a pressure in the first transfer chamber (14) and in the gas comportment (9).

Systems and apparatuses are described for portable air distribution. A portable air unit may be used operate and/or assist operation of components/systems and provide critical instrument air supply in a wide variety of emergency industrial and commercial environments. The portable air unit may provide, via one or more solenoids, air from a battery powered integrated air compressor, as well as critical control power, to one or more air operated valves (AOVs) or Instrument Air Control Systems. The portable air unit may be configured, via an inverter and/or battery, to provide Alternating Current (AC) and/or a Direct Current (DC) electricity, power, and/or the like that may be used for diagnostic testing and/or any other critical power needs.