Abstract: In a compressed-fluid discharge control device, there are formed a valve chamber communicated with a discharge channel and supply channels for supplying a compressed fluid, and a pilot chamber into which the compressed fluid is introduced from the supply channels. A diaphragm valve for communicating or cutting off communication of the supply channels and the discharge channel seats on or separates from a valve seat provided in the valve chamber. Pilot channels through which a compressed fluid supplied to the pilot chamber passes are formed in the diaphragm valve. The compressed-fluid discharge control device has a pilot chamber opening/closing valve for opening or closing the pilot chamber. The pilot chamber opening/closing valve includes a solenoid valve which is opened in response to energization thereof and closed in response to de-energization thereof.

Abstract: A high-pressure fluid discharge device that can adapt to large flow rates while being small in size has a diaphragm valve body that cooperates with a valve seat provided to a body to switch between communication and blocking between a first flow path and a second flow path. A pilot chamber and a valve chamber joined to the first flow path are sectioned by the diaphragm valve body, and the diaphragm valve body is provided with a pilot passage allowing communication between the valve chamber and the pilot chamber. The diaphragm valve body is also provided with a pilot-type spool valve that switches between communication and blocking between the pilot chamber and an excretion port.

Abstract: A high-pressure fluid discharge device that can adapt to large flow rates while being small in size has a diaphragm valve body that cooperates with a valve seat provided to a body to switch between communication and blocking between a first flow path and a second flow path. A pilot chamber and a valve chamber joined to the first flow path are sectioned by the diaphragm valve body, and the diaphragm valve body is provided with a pilot passage allowing communication between the valve chamber and the pilot chamber. The diaphragm valve body is also provided with a pilot-type spool valve that switches between communication and blocking between the pilot chamber and an excretion port.

Abstract: In a fluid control valve, a cylinder chamber includes a first pilot chamber extending from a piston in one of sliding directions. An opening of a first pilot port allowing supply and discharge of fluid is formed in the inner wall of the first pilot chamber. The fluid is accommodated in the first pilot chamber when the piston is in a valve open position, and discharged via the opening when the piston is displaced toward a valve closed position. At least one of the piston and a valve body includes a throttle portion forming, between the piston and the valve body, a throttle path having a cross-sectional area smaller than the area of the opening, after the piston starts being displaced from the valve open position toward the valve closed position.

Abstract: A high-pressure fluid discharge device has an input port through which a high-pressure fluid is fed, a tank chamber which stores the high-pressure fluid, and a discharge port through which the high-pressure fluid is discharged. A diaphragm valve divides a pilot chamber and a valve chamber communicating with the tank chamber; the pilot chamber communicates with the valve chamber through a pilot passage; the valve chamber communicates with the discharge port through a discharge passage while the diaphragm valve is open; an opening-closing control valve is provided in open flow paths for opening the pilot chamber to the discharge passage; and the opening-closing control valve is opened and closed by the pressure of the fluid fed from the tank chamber.

Abstract: 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.

Abstract: A compressed fluid discharge control device is provided with a diaphragm valve. When an opening/closing operation member is operated, a pilot chamber opening/closing valve opens to open a pilot chamber. As a result, pressure within a valve chamber becomes higher than that in the pilot chamber and the diaphragm valve separates from a valve seat. Then, compressed fluid previously accumulated in a holding chamber flows into a discharge passage through the valve chamber and is discharged from the discharge opening of the discharge passage.

Abstract: In a fluorine resin molded body employed in a fluid device and including a ring-shaped seal section, the seal section is configured from a projection and a backup section that are aligned in a direction in which the seal section receives a compressive load when the fluorine resin molded body is installed in the fluid device.

Abstract: In a compressed-fluid discharge control device, there are formed a valve chamber communicated with a discharge channel and supply channels for supplying a compressed fluid, and a pilot chamber into which the compressed fluid is introduced from the supply channels. A diaphragm valve for communicating or cutting off communication of the supply channels and the discharge channel seats on or separates from a valve seat provided in the valve chamber. Pilot channels through which a compressed fluid supplied to the pilot chamber passes are formed in the diaphragm valve. The compressed-fluid discharge control device has a pilot chamber opening/closing valve for opening or closing the pilot chamber. The pilot chamber opening/closing valve includes a solenoid valve which is opened in response to energization thereof and closed in response to de-energization thereof.

Abstract: In a fluid control valve, a cylinder chamber includes a first pilot chamber extending from a piston in one of sliding directions. An opening of a first pilot port allowing supply and discharge of fluid is formed in the inner wall of the first pilot chamber. The fluid is accommodated in the first pilot chamber when the piston is in a valve open position, and discharged via the opening when the piston is displaced toward a valve closed position. At least one of the piston and a valve body includes a throttle portion forming, between the piston and the valve body, a throttle path having a cross-sectional area smaller than the area of the opening, after the piston starts being displaced from the valve open position toward the valve closed position.

Abstract: 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.

Abstract: A compressed fluid discharge control device is provided with a diaphragm valve. When an opening/closing operation member is operated, a pilot chamber opening/closing valve opens to open a pilot chamber. As a result, pressure within a valve chamber becomes higher than that in the pilot chamber and the diaphragm valve separates from a valve seat. Then, compressed fluid previously accumulated in a holding chamber flows into a discharge passage through the valve chamber and is discharged from the discharge opening of the discharge passage.

Abstract: A two-way valve configured to switch between a communication state and a non-communication state of between a primary port and a secondary port includes a valve body having the primary port and the secondary port and containing a valve seat portion therein, a diaphragm valve supported inside the valve body so as to be brought into contact with and separated from the valve seat portion, and a drive mechanism configured to displace the diaphragm valve. The diaphragm valve includes an annular projection facing a flat seat surface of the valve seat portion and an elastic member attached at the back of the annular projection.

Abstract: A fitting nut made of a resin material includes: a hollow, large-diameter tube portion having a female thread formed on its inner peripheral wall; and a small-diameter tube portion that is continuous to the large-diameter tube portion and having a hollow cylindrical shape with a smaller diameter than the large-diameter tube portion. The small-diameter tube portion includes, in the outer peripheral wall thereof, a plurality of engagement grooves that are depressed inwardly in the diameter direction of the small-diameter tube portion and extend along the longitudinal direction that is orthogonal to the diameter direction.

Abstract: In a fluorine resin molded body employed in a fluid device and including a ring-shaped seal section, the seal section is configured from a projection and a backup section that are aligned in a direction in which the seal section receives a compressive load when the fluorine resin molded body is installed in the fluid device.

Abstract: A switching valve is constructed such that a rotor is rotatably provided inside a body and a cover member is provided with respect to the body so as to face a table part of the rotor. A gap having a prescribed interval is provided between an upper surface of the table part and the cover member, and a valve body biased toward the cover member side is provided to the table part. When rotating, the rotor does not slide on the bottom surface of the cover member, and leakage of a liquid from an inlet port is prevented due to the valve body seated on and closing an outlet port that is not the outlet port which is provided to the cover member so as to cause the liquid to be outputted therethrough.

Abstract: In a fluid control valve, a cylinder chamber includes a first pilot chamber extending from a piston in one of sliding directions. An opening of a first pilot port allowing supply and discharge of fluid is formed in the inner wall of the first pilot chamber. The fluid is accommodated in the first pilot chamber when the piston is in a valve open position, and discharged via the opening when the piston is displaced toward a valve closed position. At least one of the piston and a valve body includes a throttle portion forming, between the piston and the valve body, a throttle path having a cross-sectional area smaller than the area of the opening, after the piston starts being displaced from the valve open position toward the valve closed position.

Abstract: A two-way valve configured to switch between a communication state and a non-communication state of between a primary port and a secondary port includes a valve body having the primary port and the secondary port and containing a valve seat portion therein, a diaphragm valve supported inside the valve body so as to be brought into contact with and separated from the valve seat portion, and a drive mechanism configured to displace the diaphragm valve. The diaphragm valve includes an annular projection facing a flat seat surface of the valve seat portion and an elastic member attached at the back of the annular projection.

Abstract: A switching valve is constructed such that a rotor is rotatably provided inside a body and a cover member is provided with respect to the body so as to face a table part of the rotor. A gap having a prescribed interval is provided between an upper surface of the table part and the cover member, and a valve body biased toward the cover member side is provided to the table part. When rotating, the rotor does not slide on the bottom surface of the cover member, and leakage of a liquid from an inlet port is prevented due to the valve body seated on and closing an outlet port that is not the outlet port which is provided to the cover member so as to cause the liquid to be outputted therethrough.