Valve (1) for fluids, preferably for gases, comprising an inlet passage (2) for a fluid; an outlet passage (3) for the fluid; a shutter (4) interposed between the inlet passage (2) and the outlet passage (3) and movable along a movement direction (L) between an open position and a closed position; first magnetic attraction means (5) operatively active on the shutter (4) for attracting and/or keeping the shutter (4) itself towards the open position; a box-shaped body (7) containing the first magnetic attraction means (5) and extending along the movement direction (L) between an outer face and an inner face with respect to an inner volume (V) of the valve (1) interposed between the inlet passage (2) and the outlet passage (3). The box-shaped body (7) further comprises a dividing wall (10) for isolating the first magnetic attraction means (5) from the inner volume (V).

A solenoid valve includes: a valve housing having, at one end thereof, an inlet port through which a fluid is introduced and having, at the other end thereof, an outlet port through which the fluid is discharged; a solenoid provided in the valve housing and disposed between the inlet port and the outlet port; a first plunger provided at one end of the solenoid adjacent to the inlet port and configured to selectively open or close the inlet port by being rectilinearly moved by the solenoid; a first spring member configured to provide elastic force to allow the first plunger to move in a direction in which the first plunger closes the inlet port; a second plunger provided at the other end of the solenoid adjacent to the outlet port and configured to selectively open or close the outlet port by being rectilinearly moved by the solenoid in a direction opposite to the movement direction of the first plunger; and a second spring member configured to provide elastic force to allow the second plunger to move in a direction in which the second plunger closes the outlet port. The solenoid valve has a simplified structure while ensuring sealability.

A solenoid valve includes: a valve housing having, at one end thereof, an inlet port through which a fluid is introduced and having, at the other end thereof, an outlet port through which the fluid is discharged; a solenoid provided in the valve housing and disposed between the inlet port and the outlet port; a first plunger provided at one end of the solenoid adjacent to the inlet port and configured to selectively open or close the inlet port by being rectilinearly moved by the solenoid; a first spring member configured to provide elastic force to allow the first plunger to move in a direction in which the first plunger closes the inlet port; a second plunger provided at the other end of the solenoid adjacent to the outlet port and configured to selectively open or close the outlet port by being rectilinearly moved by the solenoid in a direction opposite to the movement direction of the first plunger; and a second spring member configured to provide elastic force to allow the second plunger to move in a direction in which the second plunger closes the outlet port. The solenoid valve has a simplified structure while ensuring sealability.

A constant pressure valve for an inflatable product is provided. The constant pressure valve comprises: a housing defining an airflow channel within. A first sealing seat is disposed in the airflow channel and a first through hole is formed in the first sealing seat. An inflation valve core comprises: a first actuating assembly and a first valve head. The first actuating assembly is configured to drive the first valve head to disengage from the first through hole, or to engage with the first through hole in a sealing manner. The constant pressure valve is switchable between an inflation state, in which the first valve head is disengaged from the first through hole, and the airflow channel is unblocked; and a cut-off state in which the first valve head is engaged with the first through hole in a sealing manner, and the airflow channel is blocked by the first valve head.

Embodiments of the disclosure generally relate to a flapper valve. The flapper valve may be used with processing chambers, such as semiconductor substrate processing chambers. In one embodiment, a flapper valve includes a housing having a first opening at a first end thereof and a second opening at a second end thereof, a first flapper pivotably disposed in the housing, and a second flapper pivotably disposed in the housing. The first and second flappers are movable to selectively open and close at least one of the first opening and the second opening.

A constant pressure valve for an inflatable product is provided. The constant pressure valve comprises: a housing defining an airflow channel within. A first sealing seat is disposed in the airflow channel and a first through hole is formed in the first sealing seat. An inflation valve core comprises: a first actuating assembly and a first valve head. The first actuating assembly is configured to drive the first valve head to disengage from the first through hole, or to engage with the first through hole in a sealing manner. The constant pressure valve is switchable between an inflation state, in which the first valve head is disengaged from the first through hole, and the airflow channel is unblocked; and a cut-off state in which the first valve head is engaged with the first through hole in a sealing manner, and the airflow channel is blocked by the first valve head.

Embodiments of the invention provide a push valve assembly. The push valve assembly includes a valve piston that is movable within a valve body between a fully opened position and a fully closed position, passing through an intermediate rinsing position, to selectively provide pressurized fluid through flow paths defined by the position of the valve piston.

Valve (1) for fluids, preferably for gases, comprising an inlet passage (2) for a fluid; an outlet passage (3) for the fluid; a shutter (4) interposed between the inlet passage (2) and the outlet passage (3) and movable along a movement direction (L) between an open position and a closed position; first magnetic attraction means (5) operatively active on the shutter (4) for attracting and/or keeping the shutter (4) itself towards the open position; a box-shaped body (7) containing the first magnetic attraction means (5) and extending along the movement direction (L) between an outer face and an inner face with respect to an inner volume (V) of the valve (1) interposed between the inlet passage (2) and the outlet passage (3). The box-shaped body (7) further comprises a dividing wall (10) for isolating the first magnetic attraction means (5) from the inner volume (V).

Embodiments of the invention provide a push valve assembly. The push valve assembly includes a valve piston that is movable within a valve body between a fully opened position and a fully closed position, passing through an intermediate rinsing position, to selectively provide pressurized fluid through flow paths defined by the position of the valve piston.

A system for adjusting pressure of a gas includes: a first shutter unit for causing a pressure drop in the gas, from a supply pressure to a delivery pressure; a pilot unit for providing a pilot pressure depending on the difference between the delivery pressure and a predefined setting pressure; a first drive unit operated by the pilot pressure to reduce the opening of the first shutter unit when the delivery pressure exceeds the setting pressure, and vice versa; a second shutter unit in series with the first shutter unit can assume a closed configuration; a second drive unit operated by the pilot pressure to reduce the opening of the second shutter unit when the delivery pressure exceeds the setting pressure, and vice versa. When the first shutter unit is open the opening of the second shutter unit causes a pressure drop smaller than the pressure drop by the first shutter unit.