GAS NEGATIVE PRESSURE VALVE
    2.
    发明申请

    公开(公告)号:US20240419196A1

    公开(公告)日:2024-12-19

    申请号:US18498998

    申请日:2023-10-31

    Abstract: A gas negative pressure valve is provided which comprises a valve body and a valve cover. A gas inlet and a gas outlet are disposed on the valve body. A drive lever and a diaphragm assembly are disposed inside the valve body, and one end of the drive lever is connected to a lower end of the diaphragm assembly, and the other end of the drive lever is connected with a sealing gasket. An end of the drive lever is hinged on a sidewall of the valve body. A reset spring is disposed between the drive lever and a bottom of an inner chamber of the valve body. A guide passage is opened in the inner chamber of the valve body. An end of the drive lever close to the gas inlet is connected with a guide shaft, a lower end of which is cooperated slidably in the guide passage.

    DIAPHRAGM PRESSURE REDUCER
    7.
    发明公开

    公开(公告)号:US20230315132A1

    公开(公告)日:2023-10-05

    申请号:US18005890

    申请日:2021-07-13

    Applicant: CALEFFI S.p.A.

    Inventor: Marco Caleffi

    CPC classification number: G05D16/0661 E03B7/075

    Abstract: A diaphragm pressure reducer has internally a shutter regulating the fluid passage between an inlet and an outlet; the shutter is pushed to open by a spring which is contrasted by an elastic diaphragm on which the fluid pressure acts to push the shutter to close; the diaphragm is placed between a first chamber in which the pressurized fluid is present that acts on the diaphragm and a second chamber communicating with the outside through an air vent passage; at the air vent passage an elastically deformable element is arranged that normally allows air to flow in the air vent passage, but in the event of rupture of the diaphragm through the thrust of the water pressure is deformed and moves so as to shut the aforesaid air vent passage and prevent water exiting the diaphragm pressure reducer.

    PRESSURE REDUCER
    8.
    发明公开
    PRESSURE REDUCER 审中-公开

    公开(公告)号:US20230176596A1

    公开(公告)日:2023-06-08

    申请号:US17906154

    申请日:2021-03-10

    Applicant: PITTWAY SARL

    Inventor: Peter Tasser

    CPC classification number: G05D16/0658 G01M3/2876

    Abstract: A pressure reducer includes a housing, defining upstream and downstream pressure chambers. A valve is positioned in the housing and includes a diaphragm acting on a valve tappet. The valve includes a valve body fastened to the valve tappet and cooperating with a sealing element. The valve body has a cylindrical, hollow-cylindrical, or conical contour and forms a sealing surface effective in the radial direction. The sealing surface is interrupted at at least one circumferential position by a flow channel, such that, depending on a pressure drop in the downstream pressure chamber, either the sealing element lies against the sealing surface and completely closes a flow region between the sealing element and the sealing surface or the sealing element is removed from the sealing surface and completely opens the flow region or the sealing element lies against the sealing surface and partly opens the flow region exclusively by the respective flow channel.

    OXYGEN CONTROL SYSTEM WITH IMPROVED PRESSURE REGULATOR

    公开(公告)号:US20230081989A1

    公开(公告)日:2023-03-16

    申请号:US17473619

    申请日:2021-09-13

    Abstract: Described are oxygen control systems that utilize compressed air or oxygen. The oxygen control systems may include a control device having a first inlet that enables the flow of a supply gas from a high pressure gas source at an input pressure into the control device. The control device also includes a second inlet that enables a flow of atmospheric air into the control device and an outlet in fluid communication with the first inlet and the second inlet. The control device also includes a pressure regulator that is operable in a first mode and a second mode. In the first mode, the pressure regulator reduces input pressure of the gas to a first outlet pressure at the outlet, and, in the second mode, the pressure regulator reduces the input pressure of the gas to a second outlet pressure at the outlet that is greater than the first outlet pressure.

    Flow control device with drain check

    公开(公告)号:US11511290B2

    公开(公告)日:2022-11-29

    申请号:US17145037

    申请日:2021-01-08

    Abstract: A flow control device including: a housing including a flow passage extending from an inlet, through the housing to an outlet; a hollow tube within the housing defining a tube passage included in the flow passage of the housing; a valve seat in the housing and disposed between the inlet to the flow passage and an inlet to the tube passage of the hollow tube; and a drain check shuttle within the housing and configured to move reciprocally with respect to both the housing and the hollow tube, wherein the drain check shuttle has: a first position within the housing at which the drain check shuttle abuts the valve seat, and closes a gap between the valve seat and the inlet to the hollow tube; and a second position displaced from the valve seat and which opens the gap.

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