Valve for fire extinguisher and fire extinguisher pressure gauge
Our valves are CE certified for portable CO2 Fire Extinguisher, brass alloy body, working pressure 174 bar, PT 250 bar, Inlet Thread M25x2, Outlet Thread W21.8x1/14 with safety device. Fire Extinguisher Valve EMS Industry is the distributor and supplier of Industrial Tools in Turkey Features of our Fire Extinguisher Valve; - The valve is designed according to BS 341 and DIN 477 standard - Easy hand wheel operation under high pressure - Marking on the neck valve protects against damage - Hot forged brass body " Special Alloy " - All inlet and outlet standards are available Technical Specification, Part Name & Material:
A discharge valve assembly for a fire extinguisher container includes a housing defining a passageway providing communication between the container outlet and a nozzle. An elongated tubular valve stem is axially movable in the passageway between open and closed conditions with respect to a valve seat in the passageway, the stem projecting from the passageway for engagement by an actuating lever. An elongated indicating rod, shorter than the valve stem, is coaxially movable therein between extended and retracted conditions. A bias spring and the pressure in the container holds the valve stem closed, and the pressure in the container holds the indicating rod extended. A bias spring urges the indicating rod toward a retracted position. To check the pressure the indicating rod is manually depressed, the extent to which it returns to its extended condition being indicative of the magnitude of the pressure in the container. The bias springs for the indicating rod and the valve stem are disposed of within the passageway. No seals are necessary above the valve seat between the valve stem and the passageway and the indicating rod.
The present invention relates to valve mechanisms for controlling the discharge of material under pressure from a container. In particular, the invention relates to discharge valves for fire extinguishers. There are present in the prior art many container closures and dispensing devices designed to operate with fluids or free-flowing powders which are under pressure, such as fire extinguishers. Such dispensing devices have also been provided with pressure indicating means to give an indication of the pressure within the container so that a user can tell whether the container needs to be repressurized or refilled. However, such prior dispensing devices with pressure indicators are typical of complex construction, comprising a large number of parts. In many cases, some of these parts or portions thereof are exposed in use, so as to be subject to the environment in which the fire extinguisher is used or stored. Furthermore, in those devices in which the indicating means form a part of the valve mechanism, it typically entails elongation of the valve mechanism and, therefore, the housing thereof, thereby increasing the overall size of the extinguisher.
The object of the invention is to provide a dispensing apparatus that avoids the disadvantages of the prior devices while affording additional structural and operating advantages. The present invention provides a dispensing apparatus for controlling the discharge of material under pressure from a container outlet, including a nozzle and a passageway providing communication between the container outlet and the nozzle, and a valve seat in the passageway, characterized by an elongated tubular valve stem disposed in the passageway and having an actuating end projecting from the passageway, seal means carried by said valve stem said valve stem being movable axially of the passageway, bias means resient- ly urging said valve stem to a closed condition wherein said seal means is disposed in sealing engagement with the valve seat said valve stem being responsive to an external force on said actuating end thereof for movement to an open condition wherein said valve stem and said seal means are spaced from said valve seat and elongated indicating means shorter than said valve stem and disposed therewithin for movement axially with respect thereto, said indicating means having an inner end disposed at all times within said valve stem and an outer end, said indicating means being responsive to pressure in the container for movement to extended positions with said outer end extending from said actuating end of said valve stem a distance which varies with the pressure. The dispensing apparatus of this invention has pressure indicating means which is of relatively simple, economical, and compact construction.