Operation and characteristics of gate valves

Gate valve is a commonly used valve, mainly used for opening and closing the medium in pipelines. Its operation and features are as follows:

###Operation

1. * * Opening and Closing * *: Gate valves are opened and closed by rotating the handwheel or electric device. When the handwheel is rotated, the valve stem rises or falls, thereby driving the movement of the gate.

2. * * Operation method * *:

-* * Manual operation * *: Use a handwheel or wrench to manually open and close.

###Characteristics

1. Fluid channel: The fluid channel of a gate valve is usually straight through, with low fluid resistance and high flow rate, suitable for use in fully open or fully closed situations.

2. * * Sealing * *: Gate valves have good sealing performance, and the choice of sealing surface material directly affects the service life and sealing effect of the valve.

3. * * Working state * *: Gate valves are suitable for long-term fully open or fully closed states, and are not suitable for regulating flow because in the intermediate state, the gate is prone to wear and affect the sealing effect.

4. * * Structure * *: Gate valves have a relatively simple structure and are easy to maintain and replace. They are usually composed of valve body, valve cover, valve stem, gate plate, sealing surface, and other parts.

5. * * Applicable media * *: Widely applicable to various media such as water, oil, gas, etc., but in corrosive or special media situations, suitable materials need to be selected.

6. * * Size and pressure rating * *: Gate valves come in various sizes and pressure ratings to adapt to different pipeline systems and working conditions.

###Precautions

-When operating gate valves, avoid intermediate states to prevent wear on the sealing surface.

-Regularly check the sealing and operational flexibility of valves to ensure their normal operation.

-When used in high temperature and high pressure environments, appropriate materials and structural types should be selected.

In short, gate valves are efficient and reliable valves widely used in various industrial pipeline systems.

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