The invention relates to an air bleed system comprising an air bleed port provided on an engine of an aircraft, an air supply pipe, a pressure sensor, a pressure relief valve mounted in said air supply pipe, characterized in that said pressure relief valve comprises: a valve body (11); a closure member (121) pivotally mounted in said air circulation duct; and an air discharge channel (13) passing through said valve body (11); at least one air discharge opening (15) formed on said upstream face of said closure member (121) and at least one air evacuation opening (19) which opens out to the outside of the air circulation duct.

A rotary-type valve device is provided, and includes: a tubular valve having an inner passage Ip and opening parts opened in an outer circumferential wall and rotating about a predetermined axial line a shaft rotating integrally with the valve, a housing accommodating the valve, supporting the shaft to be able to turn, and defining a communication port causing the inner passage to communicate with outside; a passage member assembled in the housing such that that the passage member abuts on an outer circumferential wall of the valve and defining a radial-direction passage. The valve includes a recessed part in the axial line direction and surrounding one end part of the shaft. The housing includes a tube part inserted into the recessed part and supporting the one end part and a support hole supporting the other end part of the shaft.

A multifunction valve includes a valve body defining an inlet, and outlet and an interior chamber. A flow control gate is disposed within the interior chamber and is rotatable through an arcuate range of positions relative to the outlet providing a high level of precision control of a fluid flow rate through the multifunction valve. A method of modulating a fluid flow rate includes directing fluid flow through a multifunction valve from an inlet to an outlet, the multifunction valve including a flow control gate, adjusting the flow rate through the multifunction valve by rotating a control shaft to position the flow control gate to variably occlude the outlet of the fluid control valve.

A plug valve with adjustable actuation phases for controlling a flow rate by means of plug axial movement includes a power disk, a bearing, an inner spline, an outer spline, a valve stem, a pushing ring, a pushing fork, a plug body and a valve body. The plug body, the valve stem, the pushing ring and the outer spline are integrally formed, and are in spline connection with the power disk and the inner spline. The plug body has a special-shaped through hole in which a left portion thereof is narrow and a right portion thereof is wide. The valve body has a radial valve through hole, and the valve through hole corresponds to the plug special-shaped through hole provided at the same axial position segment, so that an actuating member for controlling actuation of a passageway is formed.

A valve assembly used in a manifold system for processing fluid samples includes a body, a valve member, and a coupling assembly. The body defines a fluid passage and a valve passage in communication with the fluid passage and receiving at least a portion of the valve member therein. The valve member is selectively movable over a range of travel between an open position, in which fluid can flow through the fluid passage, and a closed position, in which the valve member occludes the fluid passage. The coupling assembly includes a coupling member and a retention lug. The retention lug is connected to one of the body and the coupling member. The other of the body and the coupling member defines a lug raceway configured to removably receive the retention lug therein to removably mount the coupling member to the body with the valve member being movably retained therebetween.

A flow restrictor for use on a pilot operated relief valve (PORV) assembly with a pilot valve that regulates operation of a main valve to reduce pressure in a system or vessel. In one embodiment, the flow restrictor is configured with a plurality of flow modifying regions, namely, a first region and a second region that is spaced apart from the first region. These regions are configured to generate flow at the outlet of the flow restrictor that induces operation of the pilot valve that is favorable for operation of the main valve. In one example, the first region and the second region define, respectively, a first flow area and a second flow area for the flow pathway, wherein each are configured to assign a ratio of the second flow area to the first flow area with a value of less than 10.

In an applicator assembly for applying a fluid in which the applicator assembly defines at least a portion of a flow path, the assembly may comprise an upstream fluid source, a downstream applicator for forming a point of application, a conduit generally connecting the fluid source to the applicator, an orifice structure defining an orifice opening configured such that fluid flowing along the flow path passes through the orifice opening, and an orifice inverting structure configured to reverse flow through the orifice opening of the orifice structure.

A bypass valve assembly includes a housing having an inlet, an outlet, and a flow passageway to allow flow of a liquid from the inlet to the outlet and a valve seat disposed about the flow passageway between the inlet and the outlet. A movable poppet is disposed in the housing to engage the valve seat in a closed position and to disengage the valve seat in an open position when pressure of the liquid in the flow passageway exceeds a preset value to allow flow of the liquid through the flow passageway. A rotatable flow control valve is disposed in the housing between the inlet and the outlet. An actuator is coupled to the flow control valve to actuate and move the flow control valve to control flow of the liquid between the inlet and the outlet when the poppet is engaged with the valve seat.

A dual shut-off valve including a valve body defining an interior cavity and a flow tube passing therethrough, an outer cylinder including a body portion defining an interior cavity and a through hole passing therethrough, the outer cylinder being rotatably disposed within the interior cavity of the valve body, and an inner cylinder including a body portion defining a through hole passing therethrough, the inner cylinder being rotatably disposed within the interior cavity of the outer cylinder, wherein the inner cylinder and the outer cylinder are both rotatable between a first position in which the through holes of the outer cylinder and the inner cylinder are aligned with the flow tube and a second position in which the through holes of the outer cylinder and the inner cylinder are transverse to the flow tube.

There is provided a seal assembly comprising: a first component and a second component spaced apart from the first component so as to define a passage for the transfer of fluid from an inlet of the seal assembly to an outlet of the seal assembly, wherein the first component comprises a concavity at least partially defining the passage, and wherein no part of the second component extends into the portion of the passage bounded by the concavity.