What is the Post Indicator valve?
Post indicator valve (beer) is a valve set used to open or close the water supply to fire protection systems in large buildings. It consists of a conventional gate or butterfly valve located on the main water of a fire system with a raised column that protrudes above the ground or from the wall. The valve drive and the visual valve status indicator are located at the top of the column. This arrangement makes it easy to open and close the valve and to clearly see its position. Three main types - ground, pedestal and wall - are installed in various configurations and orientations. These systems include sprinklers, sprays, flood, foam and installation of a stand pipe and all include at least one main insulation valve, usually the indicator post. This valve is usually located at the point of inputs of any fire system or the actual mechanisms of gate or butterflies are more often than under the ground or in the cavities of the wall. To ensure that they can be easily seen and accessibleVat, the controls and the valve status indicator are placed on a prominent column that protrudes above the ground or wall surface.
The three most common types of valves after the indicator are ground, pedestal and wall. Each type is suitable for different types of main water installations, although they all work in the same way and have many common features. The type of ground column is usually used where the valve is placed outside the building. It is equipped with a high, vertical column with the lower part buried in the ground and usually has a type of operating handle of the locking key at the top. The open/closed indicator or target plate is located under the upper part of the column behind the window and provides a clear visual indication of the valve status.
The pedestal indicator valve is used inside the groundwater buildings. This variant is in most respects a similar type of ground column, with the exception of the assembly method. This valve is equipped with a column equipped forIir, which is screwed to a concrete plinth or pedestal. The rest of the post -valve mechanisms remains the same as the ground postal valve.
The wall wall wall valve is used, where the main water passes through the wall cavity. This type of valve has a short contribution that protrudes horizontally from the wall. This type generally has the type of hand wheel driver and similar state indicator to other types.