A mixing valve (10) includes a valve body (12) having a hot fluid inlet (14), a cold fluid inlet (16), a mixed fluid outlet (18), and a cavity (20) in the valve body (12) between the inlets (14, 16) and the outlet (18). Mixing valve (10) includes a liner (30, 130, 230, 430, 530, 630, 730, 830) positioned in valve body (12) and a valve member (40, 140, 240, 340, 440, 540, 640, 740, 840) movable therein between a first position restricting the flow of hot fluid and a second position. Liner (30, 130, 230, 430, 530, 630, 730, 830) includes a downstream valve seat (74, 174, 274, 474, 574, 674, 774) that, when engaged by valve member (40, 140, 240, 340, 440, 540, 640, 740, 840), restricts flow of hot fluid past valve member (40, 140, 240, 340, 440, 540, 640, 740, 840).

An inner drum of a washing machine has a plurality of hollow lifting ribs arranged on the side wall of the drum that communicate with the interior of the drum. At least one drainage port communicating with the hollow portions of the lifting ribs is formed in the side wall of the drum. A sealing valve is located inside each lifting rib at each drainage port. During high-speed rotation of the drum, valve bodies of the sealing valves move along a radial center direction of the drum under a centrifugal force, to open the drainage ports. Through this arrangement, discharging water flow in the drum to the outside from the hidden drainage ports is achieved. Meanwhile, centrifugal force during the high-speed rotation of the drum is used to control valve cores of the sealing valves such that the drainage ports are automatically opened for drainage from the drum.

A pipeline assembly includes a hollow body having a first opening and a second opening. A valve port fluidly coupled to the first opening is provided on the body and a valve port seat is disposed in the valve port. A shutter is urged against the valve port seat by a spring fluidly de-coupling the second opening from the first opening and the valve port. A valve plug includes a check valve. When the valve plug is disposed in the valve port, the valve plug decouples the shutter from the valve port seat to fluidly couple the first opening and the second opening with a fluid flow in only a first direction when the check valve is in an open condition.

A filtering device includes a tubular outer body with an intermediate chamber containing a pair of cup-shaped valve elements mounted floating and slidable coaxially with opposing cavities in which an axially compressed spring is housed. The first cup-shaped valve element is arranged coaxially outside the second cup-shaped valve element and has a base with a central through opening and a tubular portion with a series of ribs. The second cup-shaped valve element has a perforated base abutting against a perforated plug fixed to one side of the cavity passing towards the master cylinder. The perforated plug forms a through seat that slidably houses an appendage of the second cup-shaped valve element. Passages are formed around the plug which that establish fluid communication between the intermediate chamber and a passage to the master cylinder.

A linear compressor includes a cylinder, a discharge valve, a valve spring pressing the discharge valve to close one side of the cylinder, and a spring support portion providing a support point for the valve spring to press the discharge valve. The valve spring includes a first spring arm whose center is connected to the discharge valve and extending spirally, a second spring arm spaced apart from the first spring arm by a predetermined distance with respect to an axial direction of the cylinder and extending spirally toward an outer portion according to a shape of the first spring arm, and a rubber damper connecting the first spring arm and the second spring arm and fixing relative positions of the first spring arm and the second spring arm.

Methods and systems are provided for a zero hysteresis valve. In one example, a valve comprises protrusions shaped to maintain a distance between a moveable portion of the valve and a valve seat.

A relief valve, capable of reducing pressure of fuel in a discharge passage and including a valve housing having a communication hole and a valve member provided in a reciprocating manner against the valve housing, where the valve member regulates a flow of the fuel between a discharge passage and a fuel chamber when the valve member is brought into contact with an inner wall formed around the communication hole. T the valve member also allows the flow of the fuel between the discharge passage and the fuel chamber when the valve member is separated from the inner wall. The relief valve further including a spring that biases the valve member such that the valve member and the inner wall are in contact with each other an adjusting pipe and a stopper.

A recirculation valve includes a first supported portion that closes a first opening when a valve body biased by a biasing member is moved to one side in the axial direction, the first supported portion opens the first opening when the valve body moves to the other side in the axial direction against a biasing force of the biasing member due to a negative pressure on a downstream side with respect to that on an upstream side, the valve body includes a first hole extending from an end portion on the other side in the axial direction to one side in the axial direction, and a valve body barrel portion includes a second hole that extends from a radially outward side thereof and reaches the first hole.

An electrically driven actuator for opening and closing a valve comprises: an electric motor (1); a movable plate (8), to which a valve body is connected; a conversion mechanism (3) configured to convert a rotational motion of the electric motor (1) to a linear motion; a first biasing member (11) configured to bias the movable plate (8) toward a first direction; and a second biasing member (12) configured to bias the conversion mechanism (3) toward a second direction. The valve body is to be opened when a part of the conversion mechanism (3) linearly moves to move the movable plate (8) toward the second direction, and is to be closed when the first biasing member (11) biases the movable plate (8) toward the first direction. The conversion mechanism (3) is configured to be displaced relative to the movable plate (8) in a state in which the valve body is closed.

In a fast-switching 2/2-way cartridge valve, which can serve as a check valve, a closing movement of the closing body thereof is damped by contact portions which lie on one another and are movable in relation to one another during the closing movement. The contact portions are formed on the closing body and on the valve bore in which the closing body is guided.