A valve piston has a central axis along which mutually spaced control geometries are provided, which are bypassed by a passage that extends through the valve piston. The valve piston is, at least in portions, manufactured additively. A valve is includes a valve housing and a housing recess, in which the valve piston is received so that it is adjustable relative to the valve housing.

The present application concerns a valve, and particularly position indicating assembly for use therewith. The position indicating assembly comprises a first end engageable with a valve member of the valve, an opposite second end displaceable with respect to a body of the valve in response to displacement of the first end, and an elongate bendable portion, extending between the first end and the second end, configured, upon movement of the valve member, to transmit forces operating along the elongate bendable portion, at least from said first end to said second end, so as to displace said second end, the elongate bendable portion being further configured for damping forces operating transversely thereto by reversibly bending.

A drain valve for a sterile container includes: a valve housing; a bypass that connects a container gas volume with an external gas volume; a valve body that blocks the bypass; and an actuator that displaces the valve body between a passage position and a blocking position. The valve body is displaceable according to a temperature and/or a pressure of the bypass gas volume. The valve housing has: at least one holding web, at least part of which can be located in a holding bracket of the valve receptacle; and a closure. The valve housing is pivotable from an open position into an installation position in which the closure can be fixed to a closure receptacle. When the valve housing is transferred into the installation position, the valve body is transferred into the blocking position and subjected to a closure force.

A drain valve for a sterile container includes: a valve housing; a bypass that connects a container gas volume with an external gas volume; a valve body that blocks the bypass; and an actuator that displaces the valve body between a passage position and a blocking position. The valve body is displaceable according to a temperature and/or a pressure of the bypass gas volume. The valve housing has: at least one holding web, at least part of which can be located in a holding bracket of the valve receptacle; and a closure. The valve housing is pivotable from an open position into an installation position in which the closure can be fixed to a closure receptacle. When the valve housing is transferred into the installation position, the valve body is transferred into the blocking position and subjected to a closure force.

A mechanical shutdown valve for preventing an over pressure condition is described. A valve body has an inlet, an outlet, and a channel extending from the inlet to the outlet. A valve seat and a diaphragm are positioned in the valve body. The diaphragm controls a fluid flow through the valve body. A mesh is coupled to the diaphragm such that the mesh and the diaphragm separate an upstream portion of the channel from a downstream portion of the channel. The mesh extends from the diaphragm to an inner surface of the valve body and limits fluid flow between the diaphragm and the valve body. A spring biases the diaphragm towards the open position. A characteristic of the spring determines a differential pressure threshold between the upstream portion of the channel and a downstream portion of the channel at which the diaphragm engages the valve seat.

A fluid bladder valve for a pneumatic vehicle seat adjustment device is disclosed. The valve comprises a first chamber configured to be connected to a fluid source, a second chamber configured to be connected to the fluid bladder, a third chamber configured to be connected to an environment, a fourth chamber connected to the first chamber via a first fluid passage, connected to the second chamber via a second fluid passage, and connected to the third chamber via a third fluid passage; and an actuator comprising a membrane disposed in the fourth chamber and an actuator element disposed in the third chamber and coupled to the membrane and configured to move the membrane between a first position wherein the first fluid passage is opened and the third fluid passage is closed, and a second position wherein the first fluid passage is closed and the third fluid passage is opened.

A valve device includes a valve main body having a valve chamber, and inflow and outflow passages communicating with the valve chamber; an annular valve seat surrounding an opening from the inflow passage to the valve chamber; and a valve element moved to contact with and separate from the valve seat. One of the valve seat and the valve element includes a contact surface, and the other of the valve seat and the valve element includes an annular raised rib. The rib has at a top thereof an annular sealing part contacting the contact surface to provide sealing between the valve element and the valve seat. The sealing part includes an annular flat surface extending parallel to the contact surface, and two annular inclined surfaces provided adjacent to the flat surface on both sides and inclined to the flat surface to extend in a direction away from the contact surface.

A valve device includes a valve main body having a valve chamber, and inflow and outflow passages communicating with the valve chamber; an annular valve seat surrounding an opening from the inflow passage to the valve chamber; and a valve element moved to contact with and separate from the valve seat. One of the valve seat and the valve element includes a contact surface, and the other of the valve seat and the valve element includes an annular raised rib. The rib has at a top thereof an annular sealing part contacting the contact surface to provide sealing between the valve element and the valve seat. The sealing part includes an annular flat surface extending parallel to the contact surface, and two annular inclined surfaces provided adjacent to the flat surface on both sides and inclined to the flat surface to extend in a direction away from the contact surface.

Balanced plug assemblies and pressure regulators having balanced plug assemblies are described herein. A pressure regulator disclosed herein includes a device body defining a fluid passageway between an inlet and an outlet. The device body defines a channel between the fluid passageway and a pressure sense chamber. The pressure regulator includes a seat in the fluid passageway, a stem having a flange, and a plug coupled to the stem. The pressure regulator also includes a stem guide disposed in the channel of the device body. The flange of the stem disposed in a balance chamber of the stem guide and divides the balance chamber into a first balance chamber portion and a second balance chamber portion. The stem guide at least partially forms a balance passage that fluidly couples the pressure sense chamber and the second balance chamber portion.

This document discloses a valve comprising a main valve closure body, arranged on a low pressure side of the valve and moveable to open towards the low pressure side, a control body, fixedly connected to the main valve closure body, such that a position of the main valve closure body is fixed relative to a position of the control body, a control chamber, partially defined by the control body, whereby a volume of the control chamber is variable in relation to the position of the control body, and a control fluid connector for controlling a pressure in the control chamber. The document also discloses use of the valve in a separator for separating dust and debris from an airflow, a separator comprising such a valve and a method of operating a separator.