Abstract:
A valve (1) for flow controlling of methane gas in automotive systems comprises a feed duct (30) of the gas to the delivery duct (20); having a by-pass duct (32) delimited by a by-pass duct (34) internal to the tank duct (6), to limit the overall dimensions in the attachment area to the tank.
Abstract:
A pressurised fluid container having a shut off valve (6) within a valve body. The valve body contains at least one high pressure seal (9, 10) to seal the region around the valve. The valve body is configured such that any leakage past the or each high pressure seal enters an internal gas path which routes any fluid leakage past the or each high pressure seal to one or more discrete ports (26) in the valve body.
Abstract:
Ein Ventil für einen Druckbehälter einer automatischen Brandlöschanlage, umfasst ein Ventil-Gehäuse (14) mit einer Ventil-Ausgangs-Öffnung (30) zum Anschließen einer Löschleitung (6), einer Ventil-Eingangs-Öffnung (16) zum Anschließen des Ventils (3) an den Druckbehälter (2), einem zwischen der Ventil-Ausgangs-Öffnung (30) und der Ventil-Eingangs-Öffnung (16) angeordneten Ventilsitz (25), einer Niederdruck-Kammer (24) zum Anschließen einer Auslöse-Vorrichtung (5) und einer mit der Niederdruck-Kammer (24) verbindbaren Hochdruck-Kammer (33), wobei in dem Ventil-Gehäuse (14) angeordnet ist ein eine Ventilsitz-Dichtung (27) aufweisender Schließ-Kolben (26), der zwischen einer Schließ-Kolben-Schließstellung und einer Schließ-Kolben-Offenstellung verlagerbar ist, eine mit der Ventil-Eingangs-Öffnung (16) und der Niederdruck-Kammer (24) in Druckverbindung stehende Druckregel-Einheit (21) zur Regelung eines Niederdrucks (p N ) in der Niederdruck-Kammer (24) gegenüber einem Behälterdruck (p B ) des Druckbehälters (2) und ein zwischen einer Steuer-Kolben-Schließstellung und einer Steuer-Kolben-Offenstellung verlagerbarer Steuer-Kolben (52), wobei der Schließ-Kolben (26) in der Schließ-Kolben-Schließstellung mit der Ventilsitz-Dichtung (27) auf dem Ventilsitz (25) fluiddicht angeordnet ist, so dass die Ventil-Ausgangs-Öffnung (30) gegenüber der Ventil-Eingangs-Öffnung (16) abgedichtet ist, wobei der Schließ-Kolben (26) in der Schließ-Kolben-Offenstellung beabstandet zu dem Ventilsitz (25) angeordnet ist, so dass die Ventil-Ausgangs-Öffnung (30) und die Ventil-Eingangs-Öffnung (16) in Druckverbindung stehen, wobei der Steuer-Kolben (52) in der Steuer-Kolben-Schließstellung einen Druck-Kanal (42, 43) zwischen der Hoch-druck-Kammer (33) und der Niederdruck-Kammer (24) fluiddicht abdichtet, und wobei der Steuer-Kolben (52) in der Steuer-Kolben-Offenstellung den Druck-Kanal (42, 43) freigibt, so dass die Hochdruck-Kammer (33) und die Niederdruck-Kammer (24) in Druckverbindung stehen.
Abstract:
An apparatus (100) for controlling the discharge of pressurized fluids from the outlet of a high pressure cylinder (110) containing toxic hydridic or flammable compounds is provided. The apparatus (100) contains a cylinder (110) for holding a pressurized fluid in an at least partial gas phase; a cylinder port body (114) threaded to the upper part of the cylinder (110) in a sealed position; a dual port head valve assembly (116) disposed within the cylinder port body (114), wherein a first port (130) is utilized to fill the cylinder with a pressurized fluid, and a second port in fluid communication with an outlet of the cylinder (122) to discharge the pressurized fluid; a gas flow discharge path (12 0) defined in part by the second port body and the outlet, and further including a restricted flow path (130) and a flow channel disposed upstream of the second port body, but wherein the gas flow discharge path does not include a restrictive element selected from the group of pressure regulators, check valves and restrictive flow orifices; and the restricted flow path (13 0) limits the flow rate of the gas discharged from the cylinder to 5,000 seem when the outlet of the cylinder (110) is exposed to an atmospheric condition.
Abstract:
A new and improved high pressure post valve used to control the flow of high pressure gas, e.g., oxygen, from a high pressure gas cylinder. More particularly, the improvements are directed to the following embodiments (1) providing the post valve with a valve actuator (16) having an annular valve seat (40), surrounding a valve cavity (41), and disposing a deformable valve seat material (50) in position to surround a gas inlet orifice (32) for sealing contact with the annular actuator valve seat (40) for sealing in an area surrounding the gas inlet orifice (32) to prevent direct contact of high pressure inlet gas against the valve seat material (50); and (2) disposing of a filter (60) within a gas inlet (32) orifice of the post valve to remove any solids entrained in the high pressure gas to prevent solids from contacting the valve actuator (16).
Abstract:
A valve for a pressurized container includes a valve housing having a central bore and a port in the for connection of a nozzle. Preferably, the valve has a unidirectional stepped valve housing. In the housing is a central bore that includes an upper portion, lower portion and a middle portion. The lower portion is narrower than the middle portion which in turn is narrower than the upper portion. The port is provided in the middle portion of said housing to facilitate connection of a nozzle to the valve. The valve has a t-stem with a lower end having a key-way and a cavity for receiving the upper portion of the valve seat. The valve seat provides the primary valve seal when the valve is closed. It has a lower portion that is shaped to provide the primary valve seal in cooperation with the valve housing. The upper portion of the valve seat has a geometry for engaging the t-stem to provide a locked assembly. The t-stem and valve seat assembly are located in the central bore and cooperate to position the valve seat for the primary valve seal. Preferably, a blocking element is provided in the lower portion of the central bore to prevent refilling of the container. An o-ring also preferably is provided to form a seal between the valve seat and the valve housing when the valve is in an open position.
Abstract:
A relatively low pressure inert gas hazard suppression system (20) is provided which is designed to protect a room (22) or the like from the effects of fire or other hazard. The system (20) includes a plurality of pressurized inert gas cylinders (24) each equipped with a valve unit (26); each valve unit (26) is in turn coupled via a conduit (28) to a delivery manifold (30). The respective valve units (26) are operable to deliver gas from the cylinders (24) at a generally constant pressure (usually around 10 - 100 bar) throughout a substantial portion of the time of gas delivery, to thereby provide effective hazard suppression without the need for expensive High-pressure gas handling and distribution hardware and a reduction in room venting area due to lower room over-pressurization. Each valve unit (26) has a valve body (48) and a shiftable piston-type sealing member (56). Gas pressure from the cylinder (24) and a spring assembly (184) biases the member 56 to the valve open position, this being counterbalanced by gas pressure within equalization and modulation chambers (180,182) provided in the valve unit (26). When a hazard is detected, the valve units (26) are actuated by draining of gas from the modulation chambers (182), allowing gas flow from the cylinders (24). As gas discharge proceeds, gas flows into and out of the modulation chambers (182) so as to achieve the desired generally constant pressure gas output. Near the end of gas discharge, the spring assembly (184) becomes predominant and holds the valve unit (26) open until all gas is discharged.