A valve for regulating two gas flows, includes a housing, two channels arranged in the housing for conducting a respective gas, a first flap arranged in the first channel for opening and closing the first channel, said first flap being rotatably arranged on a shaft, an electric motor for actuating the shaft, a second flap for opening and closing the second channel, and a third channel into which the first and the second channel lead. A connecting element is arranged on the first flap, and the first flap is connected to the second flap.

A recess 22 provided in a passage block 20; a diaphragm covering the recess 22 to form a valve chest 21 in which a fluid flows; an inflow port 23 opened at the recess 22 and allowing the fluid to flow into the valve chest 21; an NC outflow port 24 and an NO outflow port 25 opened at the recess 22 and allowing the fluid to flow out from the valve chest 21; by oscillating the diaphragm, the diaphragm is closely fitted to any one of a first valve seat 24b formed by an opening 24a of the NC outflow port 24 and a second valve seat 25b formed by an opening 25a of the second outflow port 25, to allow the fluid in the valve chest 21 to flow out from the other outflow port. The recess 22 has a first inclined portion 81 and a second inclined portion 82 having a depth gradually increasing from the first valve seat 24b and the second valve seat 25b toward the inflow opening 23.

A recess 22 provided in a passage block 20; a diaphragm covering the recess 22 to form a valve chest 21 in which a fluid flows; an inflow port 23 opened at the recess 22 and allowing the fluid to flow into the valve chest 21; an NC outflow port 24 and an NO outflow port 25 opened at the recess 22 and allowing the fluid to flow out from the valve chest 21; by oscillating the diaphragm, the diaphragm is closely fitted to any one of a first valve seat 24b formed by an opening 24a of the NC outflow port 24 and a second valve seat 25b formed by an opening 25a of the second outflow port 25, to allow the fluid in the valve chest 21 to flow out from the other outflow port. The recess 22 has a first inclined portion 81 and a second inclined portion 82 having a depth gradually increasing from the first valve seat 24b and the second valve seat 25b toward the inflow opening 23.

A shuttle valve for a safety valve arrangement is provided with a valve housing (2), which includes a fluid inlet (4) and two fluid outlets (6, 8). A movable shut-off body (12) is arranged in the valve housing (2) and can be moved between two closure positions, in which the movable shut-off body (12) closes one of the fluid outlets (6, 8). The shut-off body (12) is arranged in a pivotably about a pivot axis (D). The shuttle valve includes a linear drive (46) which is coupled to the shut-off body (12) in a manner such that the shut-off body (12) is pivotable between its two closure positions by moving the linear drive (46).

A fluid feeding apparatus includes: a first connection portion configured to be connected to a first container in which fluid is stored; a second connection portion configured to be connected to a second container in which fluid is stored; a first flow path that communicates with the first connection portion; a second flow path that communicates with the second connection portion; a resistance portion configured to generate a difference of conduit resistance to cause one of the first flow path and the second flow path to be higher in the conduit resistance than the other flow path; and a switching portion switching a level relationship of the conduit resistance between the first flow path and the second flow path.

Disclosed is a wafer processing system, a dual gate system, and methods for operating these systems. The dual gate system may have a shaft, a first gate and a second gate coupled to the shaft at opposite sides thereof, and an actuator coupled to the shaft. The actuator is configured to tilt together the shaft, the first gate, and the second gate to a first sealed gate position or to a second sealed gate position. The actuator can be operated using a pneumatic mechanism, an electro-magnetic mechanism, or a cam follower mechanism.

Disclosed is a wafer processing system, a dual gate system, and methods for operating these systems. The dual gate system may have a shaft, a first gate and a second gate coupled to the shaft at opposite sides thereof, and an actuator coupled to the shaft. The actuator is configured to tilt together the shaft, the first gate, and the second gate to a first sealed gate position or to a second sealed gate position. The actuator can be operated using a pneumatic mechanism, an electro-magnetic mechanism, or a cam follower mechanism.

A valve having a housing in which three ducts that are connected to each another are arranged, one flap, which is mounted rotatably on a shaft is arranged in each of two ducts, an electric motor which drives a shaft by a gearing system, and a transmission mechanism, which drives the second flap depending on the movement of the first flap. On the shaft of the first flap, a cam disc is arranged, on the circumference of which a lever rests, which is connected in a rotationally fixed manner to the shaft of the second flap.

An external support that routes the tubing of a reversing valve in such a manner that connection tubes extend from one end of the device and the treatment device tubes extend from the opposite end. The external support may provide guides that hold the tubing extending from the supported flat rotary switch type of valve so as to keep them from being pinch or kinked thereby ensuring free flow of blood.

When a rotating body is oriented at a default position due to the absence of a driving force, a first hook portion and a second hook portion are engaged with a fixed engagement portion and/or a movable engagement portion. When the rotating body is rotated from the default position by the driving force, the first hook portion is engaged with one of the fixed engagement portion and the movable engagement portion, and the second hook portion is engaged with the other of the fixed engagement portion and the movable engagement portion. A throttle valve device includes a pressing portion that presses the first hook portion and/or the second hook portion to apply a pressing force toward a center of a coil portion in a coil axial direction.