摘要:
A valve for liquids includes a main body and an upper lid or a connector. The main body is provided with a flow passage, an annular connecting circumference, an opening surrounded by the annular connecting circumference, and at least a metal ring integrally wrapped in the annular connecting circumference. The upper lid or the connector is provided with an annular connecting circumference having at least one metal ring integrally wrapped in it. Therefore, after having the main body combined with the upper lid or the connector, the valve can withstand comparatively large fluid pressure so as to prolong service life and be used to a wider application.
摘要:
A valve element (20) to be positioned in a tapping head (30) housing (32) and operated by a tap handle (34) for causing the valve element to be closed in a first position of the tap handle and opened in a second position The valve element constitutes an integrally cast and unitary elastomeric element comprising an outer part and an inner part. The inner part defines a through-going inner passage communicating with a dispensing line (10) for allowing dispensing of beverage in the second position The outer part and the inner part defines a space therebetween communicating with the dispensing line and being sealed off by a flexible end wall circumferentially encircling the inner passage and joining the outer part and the inner part together The outer part is having an elastically deformable wall part allowing the outer part to be elongated when shifting the tap handle between the first position and the second position.
摘要:
An internal blow out preventer is provided that includes a ball valve including a tubular assembly having a central passageway with upper and lower seats mounted therein. A ball is rotatably received between the upper and lower seats and includes an external surface and a central opening, wherein the central opening includes an undercut. A protective coating is applied to both the external surface and the undercut of the ball.
摘要:
The present invention relates to a method of producing a micromechanical component for controlling a fluid flow and to a component produced by this method. The method of producing a micromechanical component (1) for controlling a fluid flow comprises the steps of: producing an oscillatory membrane (4, 4a) on a surface (2a) of a carrier layer (2) by forming an underlying cavity (3, 3a) from the same surface side, covering the carrier layer (2) with an intermediate layer (6), structuring the intermediate layer (6) and covering the intermediate layer (6) with a top layer (11) that closes off the micromechanical component (1). It is distinguished by the fact that the structuring of the intermediate layer (6) is performed in such a way that a sealing element (8, 18) of a fluid valve (14, 17) that closes or encloses a valve opening (12, 22) formed in the top layer (11) is produced on the membrane (4, 4a).
摘要:
Ein Ventil mit einem Gehäuse (1), wobei das Gehäuse (1) eine erste Zuleitung (2) und eine zweite Zuleitung (4) zu einem ersten Druckraum (8) umfasst, wobei die Zuleitungen (2, 4) durch ein bewegliches Dichtelement (5) strömungsverbindbar sind, welches auf einem Dichtsitz (9) anlegbar ist, und wobei an dem Dichtelement (5) eine Rollmembran (6) festgelegt ist, die den ersten Druckraum (8) von einem zweiten Druckraum (10) fluiddicht abtrennt, ist im Hinblick auf die Aufgabe, ein Ventil der genannten Art derart auszugestalten und weiterzubilden, dass ein fein abstimmbares Öffnungsverhalten des Ventils gewährleistet ist, dadurch gekennzeichnet, dass die Rollmembran (6) und das Dichtelement (5) dem ersten Druckraum (8) zugewandte druckwirksame Flächen (13, 12) derart ausbilden, dass die am Dichtelement (5) angreifenden Druckkräfte innerhalb des ersten Druckraums (8) zumindest teilweise kompensiert werden.
摘要:
A method of forming a valve assembly for delivering a fluid from a fluid bag to an animal caging system for housing an animal can include forming, in an injection molding machine, an upper member having a piercing member and a connecting member. The upper member has a fluid channel defined therethrough; and forms, in an injection molding machine, a base having a flange member and a base fluid channel defined therethrough. The base is designed to be matingly coupled to the upper member. The method can further include forming, in an injection molding machine, a stem member designed and dimensioned to be disposed in part within the base fluid channel. The stem member has an actuation portion extending through a spring element. The stem member has a top portion having a lower surface.
摘要:
Disclosed is a vacuum control valve for manually controlling pressure in a vacuum device, such as a vacuum filtration device. In one embodiment, the vacuum control valve comprises (a) an inlet adapted to receive a vacuum port, (b) an outlet in fluid communication with the inlet and adapted to receive a vacuum source; (c) a vacuum vent providing fluid communication among the inlet, the outlet and a gas source; and (d) a vent cap movably mounted to the vacuum vent and capable of sealing the vacuum vent from the gas source. The vent cap can be formed of a flexible, for example, elastomeric, material and, when manually deformed, is displaced from the vacuum vent, thereby opening the vacuum vent. The vent cap can include a tab for actuating the valve such that applying a force to the tab deforms the vent cap, displacing it from the vacuum vent and opening the vacuum vent to the gas source. The invention also provides a vacuum filtration device comprising (a) a filter body including a filter membrane; (b) a passageway extending through the body and communicating with the upstream side of the filter for receiving a fluid to be filtered; (c) a junction mounted on the body on the downstream side of the filter and adapted to receive a closed container for receiving the filtered fluid and including sealing means for creating a fluid tight seal between the container and the body; (d) a vacuum port communicating with said junction and adapted to be connected to a vacuum source for drawing the fluid through the filter and comprising a sealable vacuum vent which, when open, provides fluid communication between the vacuum port and a gas source.
摘要:
A culture bottle assembly has a container divided into two compartments by a flange. A closure and flexible septum seals the container from the outside environment. A frame inside the container is moveable between two positions. In one position the two compartments are sealed from each other, and in the second position fluid communication exists between the compartments. The frame has an elongated member and a skirt. The skirt engages the flange to form a seal. Downward force in the elongated member causes the skirt to flex. Cooperating means create a gap between the skirt and the flange when the skirt flexes. The flexible septum covers the elongated member thereby allowing force to be applied to the elongated member without opening the container. A solid media holder has trays for holding solid media in the upper compartment.