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Electric switch butterfly valve installation and maintenance need careful
As we all know, in the valve market, electric switch butterfly valve is also a very popular type of valve, its use of the extensiveness is self-evident. In general, the electric switch butterfly valve is composed of an electric actuator and a butterfly valve, and can be normally used after being installed and debugged and mechanically connected. When everyone purchases the device, the installation and maintenance work of the electric switching butterfly valve must be clearly defined.
First of all, it is necessary to analyze the installation points of the electric switch butterfly valve.
First, the installation position, height, and direction of the butterfly valve must meet the design requirements, such as whether the direction of the medium flow is consistent with the direction of the arrow and whether the connection is firm and tight.
Second, whether the electric switch butterfly valve has been inspected prior to installation, such as whether the nameplate of the valve meets the predecessor national standard "General Valve Mark" GB12220. For example, when the working pressure is greater than 1.0 MPa, the strength and tightness test should be performed during installation. If it is qualified, the use can be approved. It is necessary to emphasize that in the strength test, the test pressure must be 1.5 times the nominal pressure, and the duration should not be less than 5 minutes. The valve housing and the packing have no leakage problem before they can be qualified.
Because the electric switch butterfly valve can be divided into many types according to the structure, such as vertical plate type, inclined plate type, and lever type. If it is in accordance with the sealed form to distinguish, it is more sealed and hard seal type, owes to the use of rubber ring seal, the latter using a metal ring seal.
Second, understand and master the key points for the installation and maintenance of the electric switch butterfly valve.
After detailed analysis of its installation and maintenance work, it is necessary to talk about the actual operation. First of all, when installed, the valve flap must be in the closed position; secondly, the open position needs to refer to the rotation angle of the butterfly plate instead of setting arbitrarily; then, if it is a butterfly valve with a bypass valve, it must be The bypass valve is opened; finally, when installing the electric switch butterfly valve, it must be installed strictly in accordance with the instructions. If it is a heavy weight butterfly valve, it must be set a solid foundation.
As for the maintenance work of the electric switching butterfly valve, it is similar to the maintenance of other types of butterfly valves. It is necessary to ensure that the device is clean and tidy, and the lubrication of the device must be done in order to truly extend the service life.
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